This animation is very interesting

Sprite is nice.

Connecting math and shooting game is very nice.

Sound is good.

I really like this. I can't stand the sound when the bullet bursts!

The sprites were changed from the original, which was good,

 but the calculation system was almost the same, so it would have been better to change it.

Mouse cursor moveing is so nice.

It was awesome, very easy to navigate and fun to quiz!

The effects were also very good.

I thought it would be better to have more of your ideas.

This game does not remix the original game (here) enough. Can you call this your own game?

I like the usage of mouse controls, and the fact that the math questions are more complex than you’d usually expect in a game like that.