Hey, I played a funny game a while ago. But I can't recall it's name
You were like small "Death stars" jumping around planets using different super weapons on eachother.
I remember you had to plan your jumps, since the gravity grabbed you and your missiles, and each planet had it's own strenght of gravity
I think one of the deathstars looked like a spider or something....
.:EDIT:.
I found the game, it's called WarHeads
Link