Way back when Undertale was the big internet craze for a few months, doubleWbrothers created a really neat Pinkielovania animation, complete with the full Megalovania battle and cutscenes. They decided to take it a step further with a fully playable version.
You can download it over on their Deviant Art page, but you will need a program called Unitale to actually run it.
Now go be best buddies with Pinkamena!
