nah... not too exciting - find it a bit annoying that the game actually penalizes buying upgrades - spent 30 on the magnet which did me almost no good at all and set me back 30 coins from completing level 3. if I hadn't bought it I would've finished level 3 without even playing it, but because I bought an upgrade to help me complete levels that wasn't much help I fail the level every time I try.
ANd I can't reset my upgrades to try a better combination without starting from the begnning again. I did start over 2 times though but wasn't really happy with those combinations either.
So now I'm thinking I should start over and buy nothing and see if that makes it easier. Or not... because I can't be bothered to start over every time I realize my strategy was the wrong one.
Also it's a bit like the movie The Hostel - take away the brutality and it's all pretty meh...
like a TD with not so much flexibility, levels take annoyingly long time to finish especially the bosses, 2/5 for me - i'm not gonna be fooled by t he pretty appearance
 "Brutality"){kind=icon}
 "Zombo Buster"){kind=icon}
 "CastleMine"){kind=icon}
 "Live Puzzle 2"){kind=icon}