This is probably one of the best puzzle games ever. Sudoku puzzles will definitely help you exercise your little grey cells. There are three levels of Sudoku puzzles you can choose from: easy, normal and hard, and all of them contain limitless combinations of Sudoku grids to solve.
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The Amazing Spider-Man 2 Android Free
Become the Amazing Spider-Man in this open-world 3D adventure full of crime-fighting
Sonic and Knuckles Sonic Free
The game follows both Sonic the Hedgehog and Knuckles the Echidna in their respective quests