Not very original. It's a typical physics puzzle with a bad level design. The levels are boring and very easy (at least until level 10, didn't play further). Also there are some really weird unnecessary pieces in some levels. Like in level 5 there's an ice beam dropping down on the left. It doesn't do anything!
An incredible game but really needs more and harder levels! Most of the levels could be completed by careful and skilled use of a simple torque arm for lifting, carrying, pushing etc. I was left hoping for more levels that required you to craft a more special tool, like the one where you had to make a spanner.
Definitely needs a speed-up option. Playing the medium levels is extremely boring when you get the hang of it. But you have to play them in order to get more skill points and unlock levels. Nevertheless it's the best defense game I've played so far!
It gets too easy and boring after you get the hang of it. I got to level 35 or so on the second try and killed myself on purpose. The player shouldn't be given so many more lives/balls for each level.
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