Demo · Released

If Red Then Stop Demo

Program traffic lights, barriers, and more to solve your city’s traffic problems! Improve your coding skills by learning to control time-dependent processes with realistic state machines.

Release date
September 9, 2026
Platforms
Windows, Linux
Developer
Kerzoven
Publisher
Metaroot
If Red Then Stop Demo artwork
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About If Red Then Stop Demo

Can you fix your city's traffic troubles with code? Build real-world state machines and see if you can keep everything moving! In this demo you will be able to play the first 6 levels of the first game. Solve Traffic The Smart WayManage 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 AutomationLearn the fundamentals of state machines in automation. Improve your skills to tackle more complex situations of traffic systems. 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 EngineerThe 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 SystemsConnect and integrate multiple traffic systems to create a cohesive network. Manage the flow across intersections, pedestrian crossings and train tracks.…

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If Red Then Stop Demo artwork
If Red Then Stop DemoSteam · Demo · Available
From the community

If Red Then Stop Demo reviews & player comments

Store ratings and available player reviews. Review snapshots show their last refresh date.

★ 9.4/10Steam · 86 ratings
SteamLast checked November 3, 2026

Most helpful8

Recommended
This game is my perfect game. Takes a little bit to work out but once you do its awesome. Was sad when i finished the…
Not recommended
I really disliked this. I'll say I'm pretty bad at programming, but interested in it, I find the tutorial does a really bad job of…
Recommended
Fun game and a good introduction into state machines. The demo levels have a good progression and I love the "fuzzyness" of the goals. i.e.…
Recommended
Very fun promising game. Hopefully the full game lives up to the demo at a reasonable price.
Recommended
This demo was fun! These kinda programming games usually end up giving me a headache (and I'm a professional programmer!) but something about the simple…
Recommended
Demo was really well made, was fun to get my hands on and think through! Downside of this game: after a day of work melting…
Recommended
Extremely interesting and fun take on gamifying programming logic. Tutorials for timers and state machines could use a bit more fleshing out, especially if targeted…
Recommended
The UX is very very raw, the game needs tons of polishing. The core gameplay is fun tho. I'll keep watching progress of the game.…

Most recent8

Recommended
If you're coming to this as a hobbyist coder thinking this will be extremely easy for you, you're probably wrong. Unless you've worked with state…
Recommended
Very fun promising game. Hopefully the full game lives up to the demo at a reasonable price.
Recommended
This demo was fun! These kinda programming games usually end up giving me a headache (and I'm a professional programmer!) but something about the simple…
Not recommended
It starts off very easy but then the tutorials leave you on your own with the vaguest idea of what to do. I like that…
Recommended
Demo was really well made, was fun to get my hands on and think through! Downside of this game: after a day of work melting…

Short excerpts linked to their source. The score above uses aggregate storefront ratings—not these few comments.