Oh No! More Lemmings is a computer game expansion to the Psygnosis game Lemmings. Sometimes referred to as the "data disk", it contains 100 unique single-player levels and six new music tracks. The Amiga version also includes 10 two-player levels. This game is not the official sequel to Lemmings, a title that goes to Lemmings 2: The Tribes.
The game requires either the install disk from the previous Lemmings, or, in a standalone version, the game manual, for use as a copy protector. The new levels are separated into five difficulty categories (Tame, Crazy, Wild, Wicked, and Havoc), each with 20 levels.
Unlike the original game, none of the levels borrowed graphics from other Psygnosis titles. In one level, "Inroducing SUPERLEMMING" [sic], the player must save a single lemming that moves at a greatly increased speed. Also unlike the original Lemmings, each level is unique; no levels appear in multiple difficulty categories with different amounts of each skill.