I think I can play it on Joiplay now, but I need to know what version of Godot you used. There are only plugins for Godot version 3 and 4.
Ack I'm sorry 😭 hopefully it works in the next update! I do plan on making an Android build for MMM sometime in the future (basically I'll have to remove the animations for it, but I don't think it should affect the experience too much), but unfortunately it will take a bit of time so it's on the backburner for the time being 💦