Sum Tracks 2
Play this Math puzzle game in which there are 80 levels and that means you can expect to have your brain thoroughly exercised as you play the game. You will have to track down the number shown in the grey tile until its value reaches zero. The tracking down task must be done in the correct direction.
How to play:
Use the mouse to drag the gray square tiles.
U, Space, Backspace, - Undo last move
R, Enter - Reset current level
Esc - Return to the main menu
M, S - Toggle music and sound effects