Can you fix your city's traffic troubles with code? Build real-world state machines and see if you can keep everything moving!

Solve Traffic The Smart Way

Manage and optimize traffic flow with smart signals and barriers. Vehicles and pedestrians must move from point A to B, but not everyone can go first. It's essential to balance priorities, reduce congestion, and create efficient traffic solutions. Timing and decisions make all the difference.

Learn State Automation

Learn the fundamentals of state machines in automation. Improve your skills to tackle more complex traffic situations. Explore how to control time-dependent processes with state sequences. Discover how your solutions lead to optimized traffic flow and dynamic system improvements.

Become An Engineer

The player takes on the role of an engineer in a city with traffic and financial problems. In an up-and-coming Swiss city, traffic is constantly snarled and the streets are clogged. New streetlights are poorly programmed, and the ambitious projects the mayor launched have drained the budget. Your predecessor just quit, and now it's up to you to fix the systems using a dusty manual for state machine programming. Quirky residents share their views on your solutions and provide detailed feedback.

Connect Multiple Systems

Connect and integrate multiple traffic systems to create a cohesive network. Manage the flow across intersections, pedestrian crossings and train tracks. Ensure that each part of the system works together seamlessly to improve overall efficiency.

Listen to Your People

Iterate and refine your solutions based on your citizens' feedback. Congestion and delays will drive them nuts. Listen to your people's complaints to adjust strategies, improve efficiency and ensure smooth traffic management.

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Team Kerzoven, a small team based in Switzerland, comprises six members: Marco Burri, Iris Wippich, Manuel Wirth, Wayne Hintermann, Raoul Zander and Denise Hohl.
Their passion lies in creating deeply simulated games where the players can learn more about reality. After they released their first game Of Life and Land in 2025, a city builder paired with a rich nature simulation, Team Kerzoven started working on its second game, If Red Then Stop.
If Red Then Stop grew out of an older project by team founder and automation engineer Marco Burri and was inspired by his frustration with a new traffic light system on his commute that was causing major problems.

Metaroot is a small publisher and marketing agency based in Zurich, Switzerland. The company has published the programming game “The Farmer Was Replaced”, the Tetris-like city puzzler “River Towns”, the steampunk auto-shooter “Airships: Lost Flotilla”, and the nature simulation game “Of Life and Land.”