In S.U.M. you'll put your Quick-Math skills to test! Fight very Uncool Monsters using Addition, Subtraction, Multiplication & Division. Level up and progress in the Campaign(s), or show your prowess in Endless Mode with Leaderboards.
As you enter the dungeons, you'll face a variety of "Uncool Monsters" that challenge you to solve math problems in order to defeat them. The core gameplay loop puts your arithmetic skills to the test - when a monster appears, it presents you with a missing-number equation using addition, subtraction, multiplication, or division. You must quickly select the correct numbers from the available tiles to fill in the equation and solve it, dealing damage to the monster in the process.
Each playable character class has access to special abilities that provide additional damage or other benefits when you meet certain conditions on the game board, such as creating rows or columns of the same number. Timing the activation of these abilities is key to overcoming the more difficult monsters.
As you progress through the game, the math problems become increasingly complex. Early dungeons may feature single-operation equations, but later levels introduce combined operations like addition and subtraction or multiplication and division. The number of available tiles also increases, requiring more advanced mental calculations to find the right solution.
Between battles, you'll explore the procedurally generated dungeon environments, navigating from one floor to the next and facing a new monster on each. Certain dungeons even have multiple zones, with the difficulty ramping up across them.
Defeating monsters earns you experience and currency, which can be used to level up your character and unlock new areas of the game. However, the progression and leveling system feels somewhat shallow, as levels don't seem to provide significant gameplay changes.