This game is incredibly fun! The simple premise of turn based tower defense type gameplay where numbered cards must be combined and discarded to match the number of a selected group of attacking monsters grows deeper as the game progresses. Potions to add or subtract numbers from a monster's power combined with spells to move them around, stop them, or get rid of them entirely will keep you on your toes.
As the numbers get bigger on enemies and cards, it gets tougher to make full screen clearing matches but it feels amazing when you do and you'll score tons of points as well! There is also a free play mode where you can jack the difficulty way up that is quite mind bending as well.
This game is highly recommended if you like numbers puzzles and/or have kids who need to practice good math skills. Can't wait to see what else ends up in the game!