Hey!! Sorry, I have absolutely no idea what Joiplay is, so I can't explain why or why not it wouldn't work. I may make an actual mobile port in the future, but because my skills in the "dev" side of game dev are pretty much non-existent, I will likely need to find someone with more experience in mobile to help me, as I would want to make sure it's all properly optimized and is actually a good port people would be able to enjoy (in its current form, I can't imagine it would work on mobile well as the text and buttons, etc., would be too small). This is something I would probably look into after I actually finish creating the rest of the game tho! I am just a small solo dev so unfortunately I can't do everything right away.