It's fun. I think the multiplication and division colors are a bit too similar but it works well nonetheless. Why did you choose to cap the score at 999 though? It would be cool to go further.
Hey thanks for putting time to test the game and write feedback ^_^ i totally agree about the colors and the 999 cap was just like a limit for the text place holder but i agree it would be nicer to go further the main idea was to reach the highest score and keep it for 60sec