Minttunator
Arcane
M&M fundamentals would work fine on tablets, or even fucking phones, it has an incredibly small # of buttons and a low amount of meaningful shit going on in the UI, and the tone is light as a feather. I have never been "immersed" in M&M - it's a completely gamey game. The shit that would kill this is making it a microtransaction machine.
This is a very good point! The M&M games aren't exactly complex mechanics-wise and would work on tablets and mobiles. If they go that route, though, I'm not sure they can resist the song of the microtransaction siren.