Uploaded December 2022 | Updated September 2026, 1 week ago

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A playthrough of the LEGO Rock Raiders custom level "Lost", a map made by Retsnom Kcor (@RetsnomKcor) in 2009.

The map is a replacement for Back To Basics. No instructions or objectives were posted with the map, so the objective is left unchanged from the level it replaced. The level's oxygen rate was cut to 10% of its default value (30) because it was way too hard to complete otherwise. Debug keys had to be used to complete the level, as one of the crystal caches did not spawn due to a bug in the game. After completing it, I played through an edited version of it I made that made the lava lake hidden and fixed the crystal cache.
This map was originally the first in a series of three maps, but the other two are currently lost due to Cyrem deleting RRU's original file database without moving all the files to its replacement. Thanks.

Review: It feels a little unfinished. Right away, a huge amount of walls collapse due to being too thin, opening up a way to complete the level without exploring the southern tunnels – except then half of the map's crystals don't spawn due to more walls collapsing than the game can handle. I wasn't sure what the intended way to complete the map was, but I assumed the lava cave was supposed to be hidden. The area in the northwest also feels pointless.
One thing to always remember about Rock Raiders (and Manic Miners) is that walls of rock smaller than 2x2 will always collapse unless there is a hidden cavern on the other side of them.
But again, these are all old maps back when modding was new, and they're 13 years old now, so whatever.

Download: rrubucket.s3.amazonaws.com/Mod_Map_Lost_560308.zip

All LEGO Rock Raiders maps: youtube.com/playlist?list=PL__8Qs7a9Va57E8o4HkCusWjfrHFa0izx

Played using OpenLRR v0.0.0.7-hotfix1 github.com/trigger-segfault/OpenLRR and dgVoodoo v2.79.2-LRR http://dege.freeweb.hu/dgVoodoo2/dgVoodoo2/
Recorded with OBS 28.1.2
Recorded at 640x480 resolution, 60fps. This video has been upscaled from 480p to 720p so that it can play in 60fps.

• Game: LEGO Rock Raiders (1999, Windows)
• Level Mod: Lost
• Mod Developer: Retsnom Kcor
• Mod Released: 21 June 2009

Other mods used:
• High poly models for all objects that have them
• Enhanced Original Biomes (Cyrem, 2011)
• Custom Map Slot (Cyrem, 2013)
• Tunnel Transport enabled
• Miscellaneous edits and improvements
• Music without CD Fix (Cyrem, 2019)

Music used:
• "Atmosdel" from the LEGO Rock Raiders soundtrack.
• "Rock", "Ice", and "Lava" by Marl Boonyer and Alan Boorman, 1998, from the LEGO Rock Raiders PC soundtrack: templesound.bandcamp.com/album/rockraiders-music
• Tracks 1–9 from the LEGO Rock Raiders PlayStation soundtrack.

CONTENTS:
0:00 Original
24:54 Edited

#lego #rockraiders #mods #gamemods