An alternate title of this game could be Battle Billiards.
To give you an idea of how much I like this game, I just beat it now and I've been playing it since it came out. That was over a year ago. Holy crap. The final gear core boss was destroyed by wild bees. :P
Here's the ending screen: http://imageshack.us/a/img109/9817/qf jw.jpg
Notice how it says contraception instead of contraption. :P