The Rainbow Warriors? It's a public domain Lemmings clone, I know that much. Except, the dms archive in which it resides (17-bit disk 4330) is knackered so can't be executed. More specifically, it's only 3kb in bigitude so something ain't quite right there. The version hosted on the Turran FTP is the same as the one on 17-bit CD 5 found on Archive.org and elsewhere. Aminet doesn't have a copy.
Now obviously seeing as this can't be tested, it's bound to be far superior to even sliced bread and transform the world as we know it beyond all recognition when ultimately discovered and the riddle solved! Who wants to hop aboard the meteoric quest bandwagon from ground zero?
Gauntlet, meet floor *slap*.