Quick tip: There's a clockwise bias. Breeding a clover with the top-top-right petal increases the chances of breeding a clover with the top-right-right petal or the bottom-right-right petal. Also, when breeding 7/8 clovers, make sure they are mismatched. Matching clovers will likely only breed duplicates of themselves.
PLEASE fix the mute button! It won't mute battle sounds, or sounds on the map. I wanna listen to my tunes but I can't while all my hobbits hack away at the tower!
Snapshot's advice is extremely helpful. I must add a tip for day 2, however. Focus on altitude; altitude is the key. When you're running low on fuel, hold either the left or right arrow to build up as much speed as you can. This lets you run for quite a while, bouncing off of platforms and not losing much altitude. I managed Mars on day 3 easily, with only $1100 from day 1, and I didn't hit the moon until day 3.
Yeah, the only thing that really needs improving is the gravity. Make it stronger. Also, possibly, keep it from rolling so much when the ground is being rotated. Have it move with the ground, not trying to hold its original position.
How has this game stayed top rated for so long lol. I mean its awesome but its just a platformer and all the top rateds are like strategy defense and mmos and stuff