Sum it Up is a number puzzle where you count in your head and eliminate blocks. You will play using regular blocks with numbers, bombs, lasers, negation blocks and more. The objective in the game is to drag to select chains of blocks that match specified sums. In Sum it Up you are challenged with over 100 levels with puzzles of increasing difficulty. You can also play the game in classic mode where the number board is kept constantly filled, or you can play in drop-down mode where you should try