played it just for the badges. A bit below average game, thou i gave 3/5.
+concept. i like self upgrading towers. LAST LVL IS A PIECE OF CAKE (normal): must have a traps, money and gems maxed. Then build one boomerang and help it with frost trap. it'll lvl itself, build another one closer to spawn point and wait it to lvl up (i put blue or yellow gem first). by the last wave you'll possess a dozen of lvl2-3 boomerangs a na few Ks of gold :) Yeah, i used a collector-pet
- no level line (cant say whether there are flying lvls or not)
- too short stages, 5 to 6 waves
- wasd + spacebar controls are very annoying
- starting gold is not affected by your skills