This week’s productivity killer comes guilt-free. That’s because it’s not one of those pointless time-wasters (as much as we do love them). Instead, you can feel good knowing that when you play Big Brain Wolf, you’re sharpening your cognitive skills.

The game’s storyline is based on vegetarian wolf who likes to playing chess instead of eating people. Wait, it gets better: When his mom goes missing he sets out to find her, with the help of a sassy genie. During this quest, the gene helps him navigate a series of puzzles—which is where the brain-training comes in.

The game incorporates memory skills, logic, and mental imaging in 3D. If you want to see how fit your mind is, and you’ve got some time to spare, you can download a free copy of the game here.

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