Eternal Red

Buy weapons, build sentry guns, and set up traps to prevent the creeps from making it from one portal to the other. Click on a floor panel to set up a trap or on the ceiling to build a sentry gun. Click on yourself to buy new weapons.

Move: W, A, D
Select/shoot: LMB
Reload: R
Switch weapons: Mouse wheel or E
Pause menu: P

Controls can be modified in the pause menu.