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Inertia: Escape Velocity is notable for doing something completely different from other platformers for your phone. Yeah, it has a lot of jumping around and stuff, but it's got a legitimate hook that makes it far more interesting than your average platformer.
Inertia's hook is that you're in space, and so you can fly. Essentially, you can press a button that will allow you to continue moving in whatever direction you were already headed without regard to gravity. So you'll jump and then press the button, and you'll fly toward the ceiling. Press it while you're moving to the right and you'll glide forward.
And then you bounce off of things. If you hit a flat wall, you'll head back toward where you came from. But if you hit an angled wall, you'll bounce off in a new, exciting direction. The trick is to get yourself going in the right direction at the right time, and that can be trickier than it sounds, especially when you're trying to collect all the bolts that are hovering in an angled row.
Defeating each stage in Inertia is easy, but it's much more difficult to try to collect all of said bolts that you need to repair the ship that you crashed. Trying to collect all those bolts will keep you coming back, but it will also be frustrating at times, because it can seem impossible to get yourself going at the right angle. It's a matter of skill rather than problem solving, and it can take a while to get it just right.
But what matters is that it's usually very fun, because of the novelty of the game's mechanics. Thankfully, though, Inertia is one of those games that has a lite version, so you can try it for free in order to figure out if it's for you. And you certainly should try it.