SPEEPSHighway**READ ME :[** I finally figured out a way to move around in SA2's cutscenes in the Dreamcast version!
Before we start exploring I took some time to explain the debug mode I used, since I didn't know it had so much the last time I covered it. Skip to 15:04 if you just want to see the messing around part!
Now this is running in a prototype, so you may come across bugs: - If the subtitles just display colored boxes, fast forward until the scene loops and it should stop eventually. This tends to happen in larger scenes like E0025 more. Alternatively, disable them with 2C0C5337. - If the screen screws up when starting a scene, reset the game. - If the button combos don't work it's due to a bug with 30 FPS scenes. Set 2C2331D4 to 1 and it should start working.
(All addresses are Demul, subtract FFE0000 for NullDC addresses or use 8C for console ones)
I was originally going to talk about something else in this vid too, but this one got way too long so that has to go into its own vid now.
Don't worry about the audio dips, that's just Demul being Demul. Also I recorded at 1x res again because it's less annoying to do, and some scenes had to be recorded at lower FPS in-game because they slowed down a bunch at 60.
Debug + Exploring Cutscenes - Sonic Adventure 2SPEEPSHighway2018-09-30 | **READ ME :[** I finally figured out a way to move around in SA2's cutscenes in the Dreamcast version!
Before we start exploring I took some time to explain the debug mode I used, since I didn't know it had so much the last time I covered it. Skip to 15:04 if you just want to see the messing around part!
Now this is running in a prototype, so you may come across bugs: - If the subtitles just display colored boxes, fast forward until the scene loops and it should stop eventually. This tends to happen in larger scenes like E0025 more. Alternatively, disable them with 2C0C5337. - If the screen screws up when starting a scene, reset the game. - If the button combos don't work it's due to a bug with 30 FPS scenes. Set 2C2331D4 to 1 and it should start working.
(All addresses are Demul, subtract FFE0000 for NullDC addresses or use 8C for console ones)
I was originally going to talk about something else in this vid too, but this one got way too long so that has to go into its own vid now.
Don't worry about the audio dips, that's just Demul being Demul. Also I recorded at 1x res again because it's less annoying to do, and some scenes had to be recorded at lower FPS in-game because they slowed down a bunch at 60.
It doesn't happen normally because it looks for both the Amy bonus *and* the Four of a Kind bonus being active to activate, which isn't possible.
There is a function called SetReplayNow that attempts to play Sonic's movements, but nothing ever gets stored in the first place so all it does is set Sonic's position, angle, speed and direction to 0.Sonic Adventure but there is no adventureSPEEPSHighway2023-06-26 | My girlfriend had this idea
Links: ► SADX Modding Guide: github.com/X-Hax/SADXModdingGuide/wiki ► X-Hax Modding Discord: discord.gg/gqJCF47 ► Twitter: twitter.com/SPEEPSHighway ► Tumblr: speeps-highway.tumblr.com/ ► Donate: ko-fi.com/speepshighwaySonic Adventure: Unused Egg Hornet Animations (Cutscene)SPEEPSHighway2023-03-01 | The Egg Hornet in cutscenes is a different object to the main one, it has some animations it never uses in-game. Notably, a janky early destruction animation.Sonic & Tails but their mouths can only display keyframesSPEEPSHighway2023-02-15 | Was looking at the code for mouths the other night and I messed something up, causing their interpolation to break.SEE IF YOU CAN MAKE IT THROUGH HERE SONICSPEEPSHighway2023-02-11 | Done using the function for spinning Chaos Emeralds in a circle in cutscenes, but with the emeralds replaced by Burger Statues and spawned multiple times.Why Sonic CDs Im Outta Here doesnt work in 3DSPEEPSHighway2023-02-11 | Don't jump in lavaSonic Adventure: Sonic Adventure 2 Behavior in Unused SwitchSPEEPSHighway2023-02-11 | Normal Switches in SA1 don't do this as a timer, they stay down until it expires. This unused switch in Lost World however acts like the time stop switches in SA2 do, where it blinks more rapidly as the timer approaches 0.Funny Sonic Shuffle CorruptionSPEEPSHighway2023-02-11 | Happened from messing around with Sonic Shuffle trying to disable subtitles in the Japanese version. I ended up destroying everyone's voices in the opening cutscene.Sonic Adventure: Unused Snake Path in Lost WorldSPEEPSHighway2023-02-11 | There's this unreferenced path (s_ev) for the snake in Sonic Adventure' Lost World.
Even if implement it uses a different snake object (ObjectRuinSnakeEv) that was removed so it won't show up. I gave it the regular one to make it visible, they were probably similar either way.
The name could imply it was for some kind of cutscene but that's all there is in the game about it.The Emblem Challenge (Mod)SPEEPSHighway2021-09-20 | SA1 has a lot of hidden areas and side routes but hardly any of them are worth going to because all they give you is a life box, which by the time you've reached the area have already gotten three from the amount of Rings you're hauling around.
This mod overhauls the stage emblem system so that emblems appear as collectibles over where these boxes spawn, giving incentive to seek out these areas. If you're familiar with the Red Rings of later games, this is basically that.
_______________________ Links: ► Twitter: twitter.com/SPEEPSHighway ► Tumblr: speeps-highway.tumblr.com/ ► Donate: ko-fi.com/speepshighwayFound you, Motherfucker!SPEEPSHighway2021-08-13 | Sonic lands in the jungle after committing war crimes and threatening the President of the United States, but it's not a chance at redemption for his heinous deeds he finds down there.
An in-game cutscene edit you can download on GameBanana: gamebanana.com/mods/166230 _______________________ Links: ► Twitter: twitter.com/SPEEPSHighway ► Tumblr: speeps-highway.tumblr.com/ ► Donate: ko-fi.com/speepshighwayBreaking Sonic Adventure 2 with Debug Edit ModeSPEEPSHighway2021-01-31 | Hi, Hidden Palace released a late SA2 proto recently and I've been having so much fun with it due to it still having the most debug stuff out of any version of this game.
It has the same object editor as SADX Preview, so here's a vid of me messing around with it.
Also I switched to Redream for recording. It's much, much better than Demul for it. (Wish the text had a bigger outline but oh well.)
Wow, the first ever custom DLC for SA1's Dreamcast version. It features a full scavenger hunt in the style of the official ones and both provides a way to access and is set in the Past Mystic Ruins.
Created by PkR, using research on Dreamcast DLC encryption by Sappharad.
This time we're looking into how Red Mountain changed throughout its development. This stage is a lot easier than Speed Highway because it wasn't shown off prior to the game's unveiling.
Still, it's easy to spot a few different builds of the stage. I wish the fancy lighting was kept, but that was probably nuked for performance reasons.
This is something new where I tried showing off as much development material for a stage as I can remember and explaining what changed at different points. Speed Highway is perfect to start with because it has a lot of material to work with.
Originally I was going to go into DX's changes more but I think that deserves a vid of its own, considering how big the pages on Dreamcastify are.
I've covered some parts of this demo before in old vids, but here's one that goes over the whole thing! It's really more of a localization prototype in disguise than a showcase demo.
Plus I'm uploading vids again, yay! _______________________ Links: ► Twitter: twitter.com/SPEEPSHighway ► Tumblr: speeps-highway.tumblr.com ► Donate: ko-fi.com/speepshighwayLost Kadomatsu New Year DLC - Sonic AdventureSPEEPSHighway2019-11-30 | **NOW AVAILABLE ON PC - with the Dreamcast DLCs mod** Sonic Adventure's library of DLC is still around and playable to this day. However, for the longest time, this wasn't the case for one of them.
The original New Year DLC for the Japanese release in 1998 was thought to be lost. In fact, the only mentions of it online were 20 year old Japanese websites. All that was known were its filename, when it was released and how many blocks of memory it needed.
But it's finally been uncovered! The long lost SA1 DLC has been found, giving us access to unique dialogue, music and objects that have not been seen in a very long time. (Skip to 2:20 for the in-game footage)
Message translations by Windii.SONIC ADVENTURE 2 FUNNY MOMENTS XDSPEEPSHighway2019-09-15 | Or... "Funnies I made that are still on my computer, crammed together in one video".
For the last few months I've been working on a mod with End User that patches up SA2 PC's events, which were left in a pretty broken state after the original DC release.
Here are some of the key changes: - No more darkened models, which was caused by material colors being applied when they shouldn't be, tinting them grey. - All characters use their DC models, mainly due to differences with vertex colors and eyes (especially Amy). - Fixed as many layering issues as possible. - Maria eyelashes - 16:9 everywhere, including new code to handle video effects.
A full list is provided with the mod.Baby Chao are OP - Sonic AdventureSPEEPSHighway2018-11-13 | Came across this the other day: Maxed out Baby Chao are broken in Chao Races to the point where they can even beat Chaclon by crawling.
I wanted to record all the races with one because it was funny to watch it move around.
In DX this is a bit broken since it does this for any Chao over 2500 points, which is way lower and easier to get than a Chao with 9999, which unless you play Chao Adventure for a long time you really aren't going to get a Baby to that level.(Lip Syncing) The entire Pumpkin Hill rap actually rapped by KnucklesSPEEPSHighway2018-10-30 | There, I added lip syncing to the title. If I see any more comments about expecting voice splicing I'm going to remove them :(
SA2 Knuckles lacks a mouth outside cutscenes, rendering him incapable of in-stage rapping. A total fraud!
Luckily, there's a Knuckles known for his beautiful face, so he was able to fill in the space and rap about pumpkins and ghosts in his place.Why SA2Bs cutscenes suck - Sonic Adventure 2SPEEPSHighway2018-08-16 | 15/05/19 EDIT: Stop bugging me about not using a mic. This isn't a podcast and if you absolutely need a voiceover you probably aren't paying attention to the video to begin with. I might try it out one day but not while I keep having to remove rude comments :[
Big cutscene comparison vid! I've always hated how SA2's ports screw up a lot of the cutscenes. Of course it's miles better than SADX, but it's still enough to throw me off in certain scenes, as well as confuse some plot points.
Usually I use 2x res (1280x960) to record but I had to use 1x for this because my computer doesn't have a good time recording in certain cutscenes (and 2x looked bad in my Dolphin anyway)
Transparency: https://dreamcastify.unreliable.network/index.php/transparency-issues/Tikals Flashbacks - Sonic AdventureSPEEPSHighway2018-06-11 | Somebody wanted to see all of Tikal's flashbacks in order, so here they are!
Sonic Adventure goes into further detail about what this tribe was and how it met this fate, introducing the Knuckles clan, Chaos and Tikal.
The order of events is taken from official Japanese strategy guides for the game. I also added some extra information about the tribe and the aftermath of Pachacamac's raid taken from these guides.
Very interesting stuff. The guide states that Angel Island was created by the survivors afterwards to protect the Emerald, rather than something that just happened - and left behind the mural as a warning. Now we can put to rest all those silly arguments! It also has the original name of Chaos, calling him "the Spirit of Water".
Also the second link says Chaos is canonically racist lmao.
I made this video with Japanese voices for three reasons: - The mouths are synced better to Japanese. - Tikal erroneously mentions "Chaos Emeralds" in Tails' flashback in English. - In the original Japanese version, Chaos makes Chao sounds when transforming - the only mention of him being related to the Chao in-game. It was removed in later versions.
Japanese Sonic is very interesting, as the series has long standing issues with localization that persist to this day. If you want to see more of the game in Japanese, check out my girlfriend's channel: youtube.com/channel/UCYPIDXUZecCETXE9M8T0qywHidden Objects - Sonic AdventureSPEEPSHighway2018-05-28 | Last time I went over some of the unused objects in this game. There's a ton of object-related stuff to cover though, and this is another part of it. By the way, SADX cleaned some of the leftover layouts so you won't find them in that version, here's the layouts that got wiped: -EmC3 Big (Stupid change because it makes his cutscene empty) -FE1 Capsule/Springs -FE3 Gamma (Sonic layout leftovers only - he still has some test level gunk at 0,0,0) -TP2 Amy -RM2 Gamma (Only the Dash panels got wiped though) -HS1 Amy
Background is an edit by Sable of the HD GUI menu.Exploring Super Sonic Cutscenes - Sonic AdventureSPEEPSHighway2018-02-26 | We've already been through the cutscenes in Sonic's story, now let's go check out the ones in Super Sonic's!
Despite being the shortest out of all the stories, its cutscenes have some pretty hilarious things happen in them, from alien lifeforms to Eggman flying off into space!Hero Story in Sonic Adventure 2 with Sonic Heroes voicesSPEEPSHighway2018-01-30 | A while ago I made a video where I put Sonic Adventure's voice track into Sonic Adventure 2. This time, we're doing the same thing, but it's Sonic Heroes instead!
This time we're not locked out of most of the Hero Story due to boring tutorial narration, so I'm going with that to start off. Dark and Last might come later too.Exploring Cutscenes - Sonic AdventureSPEEPSHighway2018-01-15 | Cutscenes in SA1 are pretty basic - they spawn NPCs and run a bunch of stored animations and cameras. Plus, all cutscenes play at double the speed of regular gameplay, so the game slows down to run them correctly.
I disabled a few of these and just kind of ran around in them for a while. The first couple of scenes have pretty much the same conditions as regular gameplay, but I didn't bother with the framerate and animations later on.
Exploring cutscenes this way is much more effective than using Dolphin's freecam because you don't deal with culling or the view becoming disoriented every time the camera changes. Also, SADX sucks.
We can see what these scenes do in order to work pretty clearly - keeping characters out of view before they're needed, teleporting the player for specific shots and hiding them when combined models (the Tornado) are used.
This is more of a casual vid than the other ones and I didn't bother dealing with Demul's lag this time, so expect a lot of hiccups around.Tokyo International Character Introduction Recreation - Sonic AdventureSPEEPSHighway2018-01-08 | Sonic Adventure had a few trailers at its unveiling event. One of the trailers was made up of cutscenes and gameplay with voiceover from each member of the Japanese voice cast.
Since those voiceovers can be found in the final game's voice list I remade the trailer using clips (and the main theme) from the final game! I could easily make it look more like the original trailer by editing the lighting and using the AutoDemo, but decided not to.
Some notes: * Knuckles standing on top of the standing has a camera with a focus slightly behind him in the trailer. That exact camera is probably still in the game somewhere, but I don't know all the camera types the game has. * Sonic's Windy Valley clip uses a similar spot in the final version's. Big's Windy Valley uses clips from his ending because it's the only scene with him near Froggy and he's talking about fishing with him while the clip plays. Plus, Big doesn't even go to Windy Valley. * Gamma's Red Mountain clips are a bit different - he doesn't go into that pose in the final game (though he does in the AutoDemo) so I had to do it manually. There's no spinner robots in the spot the third clip is either, so I used the nearby Kikis instead. * Obviously the final version's cannon isn't charging up in the final version of Tails transforming his plane. * Big's Icecap has no enemies in the final game, so I made him jump on an ice panel in the same spot instead. * I can't slow down cutscenes in-game due to the way they work. Only one of Gamma's clips was like that though fortunately. * I couldn't add the voiceover at the end of the trailer due to the background noise. *I used the DC opening's logo animation at the end. I tried making it look a bit nicer as well, but I can't do much about it. *I'm not sure who made the Sonic face in this vid (it's not the original) but whatever I guess. *Of course as soon as I finish this my girlfriend finds a high quality source vid, so there might be a few minor inaccuracies involving the speed of some clips and the text fonts (which I couldn't see clearly in the source I used)Sonics Story with every line from Sonic removed - Sonic AdventureSPEEPSHighway2017-11-03 | It's said that if you add "Ryan_ShutUp 1" to SA1's config file, you'll disable Sonic's voice entirely and he won't say anything for the entire game.
(Okay well he still screams when Knuckles attacks him but that's a sound effect and not a voice clip - Tails screams like that too)
I added/changed a few voice clips in scenes that had particularly long blank stares or didn't make sense. In hindsight I only think I really needed to do it for the Tails scene, but whatever.
Audio bumps are just Demul screwing around. I chopped out a lot of frames where his mouth briefly appears, but it might have still slipped through somewhere or another.
Also this reminded me of Gens Classic so I went ahead and gave everyone black eyes (though I was too lazy to do the Tornado models)Conner Adventure 2SPEEPSHighway2017-10-26 | So the new South Park game has a few.... interesting lines during a certain part. I just couldn't resist. Would've put it in-game too but didn't want to deal with SA2's format. Editing works though.Unused Objects - Sonic AdventureSPEEPSHighway2017-10-20 | Correction: Jump Panels go up to 8, not 5. Thanks Icecap, but 9 is still unused at least. I've wanted to do object stuff in this game for a while, but there's so many different types of "unused" object-related stuff in the game that I didn't know where to start.
This vid covers all (AFAIK) unique objects that aren't used at all. It also covers some objects that have unused subtypes, like Jump panels. Future parts should be covering all the out of bounds and unused SET file stuff.
Credits go to Sonic Retro for basic info about Preview's discoveries/Sky Chase screenshots, Windii for her translation work and PkR for the DLC discovery.Bored Russian Pirate SADX (Sonics story)SPEEPSHighway2017-10-02 | It's pretty common in other countries to see translation hacks of games being passed around.
This is one of them - a Russian version of SADX PC 2004, where every character in the game is voiced by a single, bored sounding slavic man. I've recorded all of Sonic's cutscenes so you can get an idea of what this game sounds like.
This was actually some kind of lost-media type thing for my friends, because we had it for a short time years ago and until this week couldn't figure out what shady totally-not-malicious website it was taken from.
I'll admit though, they did a pretty good job with the graphic translations.
Thumbnail by Sable 4 October 2017: Voice translation by provided Lonely Clouds Development!Dreamcast Launch Party DLC - Sonic AdventureSPEEPSHighway2017-09-24 | When the Dreamcast launched in the west in 1999, players could download a free add-on to their VMUs for Sonic Adventure.
This DLC decorated Station Square with various banners and balloons that displayed a message celebrating the Dreamcast's launch and/or Sonic Team when touched.
There were 3 versions - one for the US, one for Europe and another for Japan. Other than Europe's version displaying October 14 as the release date, the only difference between the three packs is the textures used on the balloons and signs.
That should wrap up the DLC for now. The only one left that hasn't been covered now is the 1998 Japanese New Years, which places a Kadomatsu (Japanese New Year decoration) in Station Square. But unfortunately, nobody's been able to track down a copy of it!
26 September 2017: Thanks to modding advances, you can now play this in the PC version! Recreation by PkR: https://dcmods.unreliable.network/owncloud/data/PiKeyAr/files/DLC_LaunchParty.zip Region is chosen via config, here are the values: 0 - US 1 - EU 2 - JPHoliday 1999 DLC - Sonic AdventureSPEEPSHighway2017-09-23 | Covers the Halloween and Christmas 1999 packs.
Since it looks like the DLC is gradually being ported into SADX now, I thought it'd be a good time to finish off these videos.
The Halloween DLC is officially titled "Tremble Park" and adds various halloween-themed decorations to Twinkle Park! If you like being told "Trick or Treat" about 30 times in one minute, this is the pack for you.
The Christmas DLC is similar to the 1998 version - it places a number of trees around Station Square that play a song when touched. I wouldn't recommend using this one until you beat Speed Highway with Sonic, because one of the trees prevent you from being able to pick up the ID Card you need to access that stage.
Videos regarding the 3 Launch Party packs will probably come along sometime soon.The Tragic Story of Big the Cat - Sonic AdventureSPEEPSHighway2017-09-10 | WARNING: Sadness
Okay but in all seriousness I watched Gamma's intro with Big yesterday and thought it was funny so I decided to record the whole thing.
The buzzing at the start is a bug with Demul if you're wondering. Don't know why, but it only happens in Eggman's base. To stop Big showing up as Gamma I stopped him using cutscene animations, though sometimes you will see Big briefly turn into a green robot for a frame or two.WIP Chao System - Sonic Adventure DX: ReviewSPEEPSHighway2017-08-20 | Sonic Adventure DX: Review is a late prototype of SADX that was given out for reviews.
Despite this, the game still has a lot of differences to the final release - with one of the bigger ones being the totally incomplete Chao system.Sonic Adventure 2 with Sonic Adventure 1s voicesSPEEPSHighway2017-07-27 | This is what SA2 looks like when you swap out the voices file with the one from SA1. Sometimes it's pretty random, other times it weirdly manages to fit somewhat!
The scenes are mostly from the Dark Story, because the first couple hundred voices in SA1 are all to do with menus, so the Hero story starts out pretty boring.
OH, on another note I wanted to make an NPC dialogue video for SA1. I've got all the lines, but the video itself is turning out long and too boring to make.Early Special Stages - Sonic 2 Beta 4SPEEPSHighway2017-06-06 | The Special Stages in Sonic 2 Beta 4 are way different from the ones that appear in the final game! On top of that, the stages have some notable graphical bugs - like objects around corners briefly appearing before the turn itself and rings that are too close to checkpoints and thus have palette issues.
Each stage has a different palette. This remained until Beta 6, though 1, 3 and 5's were given to 2, 5 and 7 respectively rather than being replaced entirely like the others.
The layouts are also different. In fact, bombs don't show up at all until the 4th stage! That said, there's a major problem with balancing the difficulty in this version - some stages have far too many rings (3), some are fairly hard (6) and others outright impossible to meet the ring requirements (4 & 5). In order to pass 4, 5 and 6, I modified the total ring count so they couldn't fail me.
============================== Full Ring Count for 4 and 5: -- Special Stage 4 -- 42/45 Rings in Lap 1 51/50 Rings in Lap 2 93/95 Highest possible Ring total after Lap 2 60/75 Rings in Lap 3 153/170 Highest possible Ring total
-- Special Stage 5 -- 45/50 Rings in Lap 1 74/55 Rings in Lap 2 119/105 Highest possible Ring total after Lap 2 26/85 Rings in Lap 3 145/190 Highest possible Ring total ==============================
Also, there's a line of Rings at the end of Special Stage 2 that're placed after the point the controls lock up for the Chaos Emerald, so the only way to get them is to be on the right side of the pipe and hope the automated movement passes through them. There isn't enough time to do this alone from the previous line though.
(And I didn't originally plan on making this public because I was only making it for a TCRF article but I figured whatever.)Sonic Speed Challenge DLC - Sonic AdventureSPEEPSHighway2017-06-01 | (In hindsight, I probably should've put this on the end of the other video with how short it is.)
This is also known as the Reebok DLC, and was made available at the end of 1999 as part of a contest where prizes could be won for a time attack.
It has the same item collection system that the QUO/Famitsu packs do, just reworked to fit the contest's conditions.
This one only works in the European version, so you need that version in order to play it. (The Sonic 2K packs work in the US version as well as Sonic Adventure International)
27 September 2017: Thanks to modding advances, you can now play this in the PC version! Recreation by PkR: https://dcmods.unreliable.network/owncloud/data/PiKeyAr/files/DLC_Reebok.zipDebug Menu (+Mode) - Sonic Adventure 2SPEEPSHighway2017-05-25 | SA2 has a neat little Debug menu that you can access through swapping some files around. It functions as a game mode select and event viewer, but can also record demos too!
This one was awkward to put subs in due to the amount of relevant stuff on the screen at all times, so I had to reduce the size of the game window for this video. I think it looks nice though!
Since this video covers debug content, I figured I'd go over the Debug Mode in the prototypes again as well. You can find the previous video I did for that (and the button combos for it) here: youtube.com/watch?v=wvPyoVXO9H0
Japanese translations (By Windii) 祝!日本ゲーム大賞受賞- Congratulations! Japan Game Grand Prize Winner ガンバレ - Do your best ガンバロウ - Let's do our best ソニ2 - SA2 いつもよりたくさんだしてます - Getting out a lot more than usual 行楽のお供に - Accompanied for a picnic 0に相当する台詞がない - There is no dialogue equivalent to 0 Trial Debug (現在僚機は首都上空を南下中 + 機体、航路とも異常なし) -The wingman is currently heading south above the capital city. There are no abnormalities with the route or the aircraft.
Addresses (sub 60000000 for Demul, 6FFE0000 for NullDC): Debug Mode Flag 8C0AE83A (The Trial) 8C0C52EA (Preview) Debugger HUD 8C0AE840 (The Trial) 8C0C52F0 (Preview)
EDIT: Oops, looks like I accidentally left in the demo files from SA2: Preview. Don't worry though, the only thing this means is that the game won't load those movements for the demos - Iron Gate, Pumpkin Hill and Sky Rail are still part of the cycle in this menu.Sonic 2K Contest DLC - Sonic AdventureSPEEPSHighway2017-05-18 | Also known as the AT&T/Official Dreamcast Magazine DLC.
These downloads were available for US players as part of a contest called the Sonic 2K Contest, where players could win various prizes.
SA1's official Time Attack contests usually just involved uploading a save file, but these ones were different - they changed up the game!
They're actually made with the same basic system as the Japanese scavenger hunt packs (QUO/Famitsu), just utilising the objectives in different ways to create new types of minigames.
8 October 2017: Thanks to modding advances, you can now play these in the PC version! All challenges are part of the same pack - just play as the appropriate character to activate them. Recreations by PkR. https://dcmods.unreliable.network/owncloud/data/PiKeyAr/files/Setup/data/DLCs.7z2 Player Mode Leftovers - Sonic Adventure 2 BattleSPEEPSHighway2017-05-13 | Look, it's SA2B! Usually I'd play the Dreamcast game instead, but in this case you can't find most of this stuff in that version. SA2B's 2 Player mode has a lot of leftovers in the stages that were added on to the GameCube release. Some are only minor, but others not so much.
Also don't worry about the lines and stretched text boxes, that's just a side effect of changing the screen size without turning off the 2P camera.