Oak Systems

Oak Systems creates games and puzzle software for the PC.

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