Defend your base from an onslaught of red cubes! Build towers to fight back, but don't forget to build miners for the yellow gem nodes. Without them, you'll run all out of power.

Buildings cost 20 energy to create.

• Press 1 to build a tower
• Press 2 to build a miner (must be placed near a rock)
• Press Escape to cancel building something

Also, please ignore the web errors when the game starts.