Pulse Run

Steer a single red blood cell around the circulatory loop — right order only — while your oxygen ticks down and the lungs are your only refill.

How to play

Click the next chamber to route your blood cell along the circulatory path: right atrium, right ventricle, lungs, left atrium, left ventricle, body, and repeat. Only the next-in-sequence chamber is a legal move — a wrong turn bounces you all the way back to the lungs. Oxygen decays in real time and reloads at the lungs, so keep moving. Complete the required laps to win.

• Only the glowing next chamber is a valid move.
• Oxygen drains continuously; run out and the circuit fails.
• Wrong turns cost you progress and points.

Controls

• Desktop: click the glowing next chamber.
• Phone & tablet: tap the next chamber — fully touch-friendly.

Game modes

• 1, 2 or 4 lap goals, each in Daily or Practice.

Tips & strategy

• Memorize the chamber order so you never hesitate over a wrong turn.
• Time your run to hit the lungs before oxygen gets critical.

What you'll learn

Pulse Run teaches the path of blood through the heart and lungs as a real-time route game.

• Skills: the circulatory system, the heart and lungs, blood flow
• Best for: roughly grades 5–10 (ages 10–16)
• For parents & teachers: how blood moves through the body.

About Pulse Run

Pulse Run is a real-time route game that teaches the path of blood through the heart and lungs. It's an original free browser game built for PlayPendium.

A free, original browser game on PlayPendium — no download, no install. Browse all games →