MrCheeze | Super Mario Bros: The Lost Levels Speedrun in 5:55.1 (using SMW ACE) @MrCheeze | Uploaded March 2022 | Updated October 2024, 3 days ago.
This is the fastest ever completion of SMB2j at time of writing. Unlike the runs that have been done before, this speedrun only works on the Super Mario All Stars+World version of the cartridge. This is because we switch games to SMW in order to use ACE to modify the save file to unlock all levels, as well as enable debug mode. Afterwards, either 8-4 or D-4 can then be used to beat the game, but I beat D-4 because the level is shorter and simpler (even more so when using debug mode noclip).
This is exactly the same ACE used by SethBling for this SMB2 (USA) speedrun: youtube.com/watch?v=1hiyFV68KCs
The ACE payload is "MVN/MVP $40F0; RTS". The reason such a simple payload can do so much is that it is a "block copy" opcode. Basically, it copies memory addresses $400000-$4000FF over memory addresses $F00000-$F000FF. The former is "open bus", which in this case means that it acts like it just contains the byte #$40 repeated forever. The latter is the save file for File A of SMB1,SMB2j,SMB2,and SMB3. Which means that this very short four-byte ACE has all of the following effects:
- Enable debug mode (which is done via a byte in the save for some reason)
- Unlock every world in SMB1 file A
- Unlock every world and level in Lost Levels file A (only this game lets you start somewhere other than the first level of each world, due to its difficulty)
- Unlock every world in SMB2 file A
- Unlock every world in SMB3 file A
Note that all of these effects will be lost when you next reset/power off the cartridge, due to some corrupted checksums.
This SMW ACE setup is fast enough that this is the fastest possible way to beat Lost Levels and SMB2. For SMB1, the ACE is slower than just beating the game normally. For SMB3, there is a different ACE that takes longer to setup, but skips having to play the last world and just credits warps in SMB3 instead ( youtube.com/watch?v=Sq-ZLlMCQvU ).
The timer shown in the video is slightly off because I started the timer two seconds before the official start of timing (pressing start on the lost levels title screen), and several seconds after the official end (touching the axe).
This is the fastest ever completion of SMB2j at time of writing. Unlike the runs that have been done before, this speedrun only works on the Super Mario All Stars+World version of the cartridge. This is because we switch games to SMW in order to use ACE to modify the save file to unlock all levels, as well as enable debug mode. Afterwards, either 8-4 or D-4 can then be used to beat the game, but I beat D-4 because the level is shorter and simpler (even more so when using debug mode noclip).
This is exactly the same ACE used by SethBling for this SMB2 (USA) speedrun: youtube.com/watch?v=1hiyFV68KCs
The ACE payload is "MVN/MVP $40F0; RTS". The reason such a simple payload can do so much is that it is a "block copy" opcode. Basically, it copies memory addresses $400000-$4000FF over memory addresses $F00000-$F000FF. The former is "open bus", which in this case means that it acts like it just contains the byte #$40 repeated forever. The latter is the save file for File A of SMB1,SMB2j,SMB2,and SMB3. Which means that this very short four-byte ACE has all of the following effects:
- Enable debug mode (which is done via a byte in the save for some reason)
- Unlock every world in SMB1 file A
- Unlock every world and level in Lost Levels file A (only this game lets you start somewhere other than the first level of each world, due to its difficulty)
- Unlock every world in SMB2 file A
- Unlock every world in SMB3 file A
Note that all of these effects will be lost when you next reset/power off the cartridge, due to some corrupted checksums.
This SMW ACE setup is fast enough that this is the fastest possible way to beat Lost Levels and SMB2. For SMB1, the ACE is slower than just beating the game normally. For SMB3, there is a different ACE that takes longer to setup, but skips having to play the last world and just credits warps in SMB3 instead ( youtube.com/watch?v=Sq-ZLlMCQvU ).
The timer shown in the video is slightly off because I started the timer two seconds before the official start of timing (pressing start on the lost levels title screen), and several seconds after the official end (touching the axe).
![[S] Collide - Single Character Edits - The Jack-Off (Homestuck)](https://i.ytimg.com/vi/K6R5fHwLgnE/hqdefault.jpg "[S] Collide - Single Character Edits - The Jack-Off (Homestuck)
From Homestucks final battle at the end of act 6.")
