KenKen: Train Your Brain!

KenKen is a Japanese logic puzzle game. Similar to Sudoku, the aim of the puzzle is to fill a grid with numbers so that no digit appears more than once in any row or column. Each cell in the grid has to be filled in with a number up to the size of the grid (for example a 3x3 grid only uses numbers 1 to 3.). The grid is divided into cages (multiple grids within black lines). The combination of numbers within a cage has to equal its target number as well as its operator.

This mobile adaptation of the puzzle is officially licensed and contains hundreds of puzzles. They are divided into five difficulties ranging from apprentice to genius. The size of the grids ranges from 3x3 to 6x6. There is a free play mode where puzzles can be chosen freely if they are unlocked as well as an academy mode where the player learns the game through step by step lessons. Each academy lesson has three lessons and a final exam. Passing the exam leads to graduation which improves the player's rank and unlocks more puzzles in free play.