Oak Systems

Oak Systems creates games and puzzle software for the PC.

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Kakuro Works
Trial version
Create and play sudoku game on your PC.
Windows
Brain Workout 3 (Portuguese)
Trial version
Play a brain training game.
Windows
Font Browser
Trial version
Browse through TrueType fonts quickly and find a suitable one for the job at hand.
Windows
Maths Trainer
Trial version
Exercise your mental math skills.
Windows
Complete Brain Workout
Trial version
Get a collection of brain training activities.
Windows
Brain Workout 2 Portuguese Language
Trial version
Test 5 brain functional areas.
Windows
Brain Workout in Brazilian Portuguese
Trial version
Test 5 brain functional areas.
Windows
Brain Workout 1 Portuguese Language
Trial version
Play Portuguese language brain training games.
Windows
Brain Workout 1 and 2 - Brain Training
Trial version
Exercise your mind and improve concentration and memory.
Windows