PLEASE pay attention, i already have headaches and MIT nightmares because of your posts from last year and the ones now.
Mugen has 20 years (1999 - 2019) and was made for users to create their dreamed fighting games.
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I dont know why you insist in proffit and money.
TAKE the engine, MAKE your game, SELL it, EARN money and LIVE happy ever after, NOBODY stops you, this is a FREE cloned engine.
IF YOU WANT to make a fighting game who has no connection with any mugen related file or code, there are MORE REALLY FREE alternatives as GODOT engine or Allegro or FENIX , all are opensource.
Edit: If you still wants to play with ikemen then download the source and double click on get.bat, it will download all the dependences needed to compile the engine.
Second is to double click on build.bat to compile it (all .go files are the engine, no more no less)
Third to run the engine download THE MUGEN files to put it in this mugen clone and double click on the ikemen exe already compiled.
Lastly enjoy the game.
If you have problems with video , update the drivers and that´s it.