Score
0
Current mission

Keep integrity
♥♥♥
Target problem · tap an enemy or use ← →
Arithmetic Defense shield

Arithmetic Defense

Defend the keep. Outsmart the horde.

Choose your training ground

Select a level

Solve the active problem before each monster reaches the keep.

The keep stands

Wave complete

Current score0
Accuracy0%
The horde broke through

Game over

Final score0
Waves cleared0