The game is written in GML. I never used lua so I'm not sure how practical a conversion to it would be. It would definitely be easier to port MKF to modern gamemaker than any other engine though. That being said, we have no plans to port the game to another engine because of the large amount of time and effort it would take. Perhaps someone else will be up to the task once we release the source code after the game's completion, however.
Viewing post in Question about conversion
Thank you for answering..
The people over at r/gamemaker said that moving mkf to gm studio isnt able to be done because of the use of too many "obselete functions" but you know better it seems...
Maybe you guys will figure out how to move it to gamemaker studio eventually and port it to android via gm studio?
If not, im sure once the source code is released someone could/would take up conversion to lua for Love2d and port it that way..
Thanks again, have a good day and keep up the good work :)