Space Calc - スペースカルク（宇宙計算ゲーム）
Calculate out in the space!
Shoot the targets with the answer beams!
Tap on the screen to move your shuttle.
Tap the answer and destroy the targets.
Rules
The life will get less when the target hits the shuttle or you miss it.
The game ends when your life point gets zero.
You can’t shoot rapidly (you have to charge it!).
With high scores, you can open the hidden stage!
Try for a high score!