The creative use of the spacebar as the only key to place turrets turns what would be an otherwise linear level for a tower defense game into one that emphasizes precision and space allocation. Very nice.

Quick note: Some objects such as the planet, moon, and aliens may appear to be spinning really fast, and this is because their rates weren't tied to the delta second on even tick. This also affects the superweapon, lowering the number of times you need to mash the spacebar for a full recharge. There may be some rogue sounds, and misplaced turrets could softlock the game. (If you get stuck, the escape key can always be used to exit instantly). I also did not have time to perform level balancing, so the game may appear to be really easy. Apart from that, I hope you enjoy my project!

Fun turret placement system!