this is a game with addition problems in it to use:right,left,up,down keys, a,s,d,f,g,h,j,k,l,q w and space are all problems. y is for for the bat to show and z is to have it hide. first you press z than you press a letter or arrow key or space and look at the problem. solve the problem and than press y and press that letter or arrow key or space again and it will show you your answer. This is a game to help with your addition skills, enjoy!