frantic is a rip-off of Ikaruga, which is a rip-off of blah etc.
its called evolution
(so if parents were to say to their kids "WTF, your a rip-off of me, F#@$ U"....get where i'm trying to go)
Hard mode is harder than insane and extreme probably cause its longer than the other 2.
Don't rate low cause your computer is slow.
and especially don't rate down cause u can't handle the game(see Etterra)
@iranaeus
yes u can restart the levels , its the first button on the left, in the top right.
u can pick u the rocks again, and there are infinite squirrels