Cool concept altough it would need some work with the physics. I wonder, did you put a physics material on the player and made it bounciness to a higher number or did you do it like the rigidbody getting force everytmime you touch a wall? Inform me will ya mate (=
I like the idea altough the game right now is not really that good. I suggest, if you are gonna use blocks as enemies and that kinda stuff to make them change color when they're close to you. I then would suggest you maybe upgrade to Unity 5, this will make the game look alot nicer just by simply messing with the new lightning system. If you want some help just shoot me a message. Good Luck (=
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 "Block Shooter"){kind=icon}