50 people, one 1 m door, 25 seconds. Get everyone out to pass.
Up to 3 barriers, each 4.5 m long. The length is fixed.
The room is empty. Add a barrier, then drag it into place.
Place your barriers, then press Start. They lock while the crowd is moving. The clock always counts 25 seconds of crowd time; 2× and 4× only play it faster.
People turn red while bodies around them press hard. The crowd starts in the same spots every run, so results compare fairly. This is a simplified crowd model, not a safety check for a real venue.
No runs yet. Press Start to play your first one.
The bar shows how much of the crowd got out. Saved on this device.