Impressive. The turrets graphics were junk, but the way you built up everything around it makes the game feel more realistic. There a sort of realism all games need, no matter how unrealistic they seem, which is something most people who create games like this miss. The vibration, the way the enemies swarm and follow you, and similar such things really make this a winning game. It just goes to show, graphics isn't everything... I'm still hooked on "Super Metroid" after all!!