Oak Systems Leisure Software Ltd

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Sudoku 60.000

Sudoku 60.000 offers 60,000 puzzles in 4×4 to 16×16 grids with four difficulty levels on Windows. Print, solve, and e-mail challenges anytime.

Mindscape’s Brain Trainer

Train your brain daily with Mindscape’s Brain Trainer, featuring timed puzzles in five categories to boost mental skills and track cognitive progress.

Sharpen your mind with Mind Quiz: Your Brain Coach, a Windows educational game featuring puzzles in verbal, numeric, spatial, memory, and logic skills. Daily tests and progress tracking help build brainpower through engaging exercises like Sudoku and mental arithmetic.

Extra Brain Power

Extra Brain Power enhances brain training with new puzzle modes like word challenges and dominoes, building on its predecessor to boost mental skills. Ideal for cognitive improvement on Windows.