An old friend had an Android phone some time before I got mine, and had a certain game I really wanted. In it, you control some sort of yellow creature (I can't remember exactly) as it skyrockets upwards. You move it left or right by tilting the phone, and you must collect stars or coins to keep going up. There are also various power-ups to get; for example, one gives you a boost and shoots you upwards. The first level takes place in some sort of forest, then moves up into the clouds. The game is similar to the Shenkuu Warrior games found on Neopets, only instead of clicking platforms to move up, you tilt the phone to collect items. My memory is kind of fuzzy, so thank you for bearing with me.