Jammed

Draw roads. Run the simulation. Fix the traffic.
Draw roads and bridges, connect growing districts, and watch your city come alive. Design efficient interchanges and prevent your city from becoming Jammed.
Draw Your Road Network
Place districts and draw one-way roads and bridges by hand. Every connection changes how traffic moves through your city.

Watch Traffic Come Alive
Start the simulation and watch hundreds of vehicles travel through your network in real time. Efficient roads keep the city moving. Bad designs create bottlenecks and traffic jams.

A Growing City Never Stops
New districts appear as you play. Roads that worked minutes ago may suddenly become overloaded. Redesign intersections, reroute traffic, and keep the city moving.

Build Massive Interchanges
Connect islands, cross rivers, and create increasingly complex road systems across handcrafted maps.

Features
Draw one-way roads freely on the map

Build bridges to cross rivers and connect islands

Watch traffic flow through your network in real time

Unlock new districts as your city grows

Multiple handcrafted maps

Steam Achievements and Leaderboards

Export your best traffic solutions as GIFs