The shamefull poll says that a new engine should be used.

Here we have a not so fair comparison (Not fair because it has different angles), the only major difference I see is the realtime shadow, I didn't show the animations but it goes slightly smoother (Pro)

There you have Game Maker Studio 1.4 vs Unity 2019.

Plus, Unity has few default quality settings, just with that, the Android version should be smooth in older devices and look better on new devices.

Well, that was just for looking at the differences, I do need to make everything up again, so, instead of wasting my time for something unwanted, I decided to think first where I should spend my time.

It could be a new and wanted project, An Sonic turn based Rpg, some random game that gather all the storyline from a franchise (Like an rpg of Naruto, Dragon Ball or Digimon that has a text based interpretation of the original episodes, mostly to have everything in one piece, maybe funnier with gaming stuff)

Idk, I feel I have wasted a lot of time, I just want to make something that people would actually enjoy playing...