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M.U.G.E.N (also known simply as MUGEN) is a freeware 2D fighting game engine designed by Elecbyte, written in C which originally used the Allegro library. The latest versions of the engine now uses the SDL library.
Gameplay
The engine uses 4 directional keys along with 7 buttons for gameplay (X, Y, Z, A, B, C and Start), in order to accommodate six-button fighters which use three punches, three kicks and a start button. However, characters do not necessarily use all seven buttons, nor need to follow a traditional six- or four-button format.
At most, two human players can control char...