Omega Flowey Fight Simulator ^new^ · Free & Ultimate

The community around these simulators is vibrant and competitive. Speedrunners use them to shave seconds off their movement during the soul segments, while modders create "Fan-made" versions of Flowey with entirely new move sets. Whether you are looking to relive the trauma of your first playthrough or perfect your dodging skills, an Omega Flowey Fight Simulator is the ultimate tool for any Undertale enthusiast.

After chipping away at Flowey’s HP (displayed as a grotesque 9999/9999), he gets desperate. In the simulator, this triggers the "Nightmare" mode: Omega Flowey Fight Simulator