I've been playing since the same time. My favorite version on the PC was called I think something like "ultimate" angband... it had code to procedurally genera

I've been playing since the same time. My favorite version on the PC was called I think something like "ultimate" angband... it had code to procedurally generate vaults - larger open rooms that were oval, round, or other non rectangular shapes (within character set limits) with various geometric side chambers - on random levels that were stuffed with both out of depth monsters and out of depth treasure. Deciding how and when to approach those was an exercise in itself, and the rewards were worth it. It also had monsters that would breed explosively, as in between your moves. In the time it took you to take three steps toward a pile of louses (lice), they would multiply from 5 to 12 total. Fun stuff.