MATH
SPACE
ATTACK
DEFEND EARTH · BEAT ALIENS WITH MATH
CHOOSE QUESTION TYPE
ADDITION
SUBTRACTION
MULTIPLICATION
DIVISION
▼ CHOOSE YOUR STARTING LEVEL
GAME
OVER
YOUR NAME
▮▮ PAUSED
0–9   type your answer
ENTER   fire laser
U   instant level-up (spend points)
ESC   pause / resume
D   toggle debug panel
▶ DEBUG
Speed offset +0
Spawn offset +0s
Number range +0
D to close  |  resets on new game