True Hero Simulator

An actually good fight simulator for Undyne the Undying

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If any attacks are inaccurate, or you have any suggestions, leave them here

Last updated: 3/9/26 12:05PM AST

Controls:
Movement - Arrows Keys
Confirm - Z/Enter
Cancel/Back - X/Shift

Fullscreen - F4/F
Sucide - Home
FPS Uncap - `
VSync Disable - \
Next Turn - =
Last Turn - -
Godmode Toggle - Tab