: Always scan downloaded files for viruses. Stick to well-known community platforms to avoid malicious software.
| Problem | Solution | | :--- | :--- | | | Open data/mugen.cfg in Notepad. Change VideoMode = Auto to VideoMode = 640x480 . | | No sound effects | Download and install OpenAL (Audio Library). Mugen requires it for 3D sound. | | Boss character won't unlock | In the data/select.def file, move the boss's name from [Unlockable] to [Characters] . | | Lag during supers | Turn off "Full Screen" mode. Press Alt+Enter to window the game. |