Circuit Tetris is a free online puzzle game that flips the classic block-stacking formula by turning every piece into an electrical component on a live circuit board. Instead of just clearing lines, your goal is to build a continuous path of electricity from the power strip on the left side of the board all the way to the terminal on the right. Every placement matters, and a wrong rotation can break your connection entirely.

What makes Circuit Tetris genuinely addictive is the neon green glow that spreads across connected pieces in real time — you can see exactly which parts of your circuit are live and which are dead. When you complete a full powered path, all connected blocks clear at once, scoring you points and opening up the board. Smart players use gravity and falling pieces to chain these clears back-to-back, racking up combos that massively boost their score. The visual feedback keeps the gameplay loop tight and satisfying without ever feeling cheap.

If you enjoy brain teaser games, logic puzzles, or classic arcade block games with a fresh twist, Circuit Tetris hits a sweet spot between strategic thinking and quick reflexes. It works perfectly as a 1-player online brain game you can pick up for five minutes or sink an hour into. Fans of electrical puzzle games, 2D arcade puzzles, and Tetris-style free games will find a lot to love here. No download, no login — just sharp puzzle gameplay straight in your browser.