Money system is totally, totally bugged. It is really hard to even get one small project. You lose more money when you are making microprojects than you wold gain from them, but after first small project you don't get enuff money to start next small, because you will ran out of the money soonish.
Totally bugged.
Gets boring in like level 20, you just spam antimatter, everyone dies, get ze coins and buy over 50 new antimatters.
Bullets dont register sometimes, when there are masses of enemies, that sucks.
Game should end at some point.