Not technically a game, but I subbed to all control schemes for ExaGear RPG (and presumably ExaGear Strategies as well), for $1.99 per month. I plan on giving it a month or two and then purchasing the control layouts directly.
But for now, I can play Arcanum, Fallout, Alpha Centauri, Civ 3 and others on my tablet with touch controls. I plan on playing through Arcanum again very soon as I didn't get far last time I tried.
Also picked up Heroes of Might & Magic III HD for Android. I feel I should just purchase the GOG version, though, and run it with ExaGear Strategies (which is 100% possible). I would then get the expansions as well as the modding capability. I don't believe HoMM III HD has either.