Orion, just try out the free or "lite" versions if you can. Personally, I don't like ANY action games cuz there's no d-pad. Even playing Dragon's Lair kinda sucks because you are expected to have very fast reflexes and sometimes you tap just outside of the button area because you're focused on looking at the action, not where the buttons are. Or you tap with too "fat" a finger presss and it just doesn't register. I bought the game cuz it was cool to have in such a portable format.
Back to action games, it just doesn't work out that well. I like the ones designed for tilting, like Rolando. But games like Pacman or Galaga... it just doesn't work well enough.
Then you have games like Time Crisis, which look ok (kinda Nintendo 64 level of graphics) but I find the 3D ones just suck down the battery power in real short time.