Connect Four

Drop discs to line up four in a row — across, up, or diagonally — before the computer does. Build your own threats while blocking the AI’s. A test of foresight and strategy.

Trains: Strategy · Category: Logic & Puzzles

How to play: Connect Four is a free, browser-based brain-training game in the Brain Gym suite. Play it instantly — no sign-up, works offline, and your best scores are saved on your device.

Play Connect Four · All Brain Gym games