By James Purse, Director at Project7 · Last reviewed 13 November 2026 · 3 minute read
Short answer. To join a Lean Simulator game, open the Join Game page, enter the five-digit game code your host gives you, then sign in with your email address. You will land in the game’s briefing room, where the host assigns your role on the line. Joining is free for players.
Key facts
- You need: the five-digit game code from your host and an email address.
- Cost: free for players.
- Device: your own laptop or tablet with an up-to-date web browser. A larger screen gives the best view of the floor.
- If you drop out: rejoin with the same code; the game keeps your place.
Step by step
- Open Join Game from the Lean Simulator menu.
- Enter your email address. If you have not played before, you will be asked for the game code; the account is created once the code is confirmed as live.
- Enter the five-digit game code from your host.
- Enter the name you want the team to see.
- Wait in the briefing room. Your host assigns roles and starts the induction when everyone is in.
During the game
You work one role on the line. Evan explains your role and its controls in a private briefing, and an audio-guided tour highlights each control the first time you need it. Captions are on by default. If you want to know what each role does before you start, see Roles on the line.
If something goes wrong
- The code is not accepted: check it with your host. A code only works while its game is open.
- You lost your connection: go back to Join Game and enter the same code. You return to the game in progress.
- You cannot hear Evan: check your device volume. Captions show everything Evan says.
- You joined late: that is fine. Your host can give you a role at the next shift, or reassign one mid-shift.
Frequently asked questions
No. Players join free with the game code their host shares.
From the person hosting your session. Hosts see the code when they open a game.
A laptop or tablet is recommended so you can see the whole factory floor comfortably.
Yes. Enter the same game code again and you return to the game in progress.
Try it before you run it
Work one shift on the line with Evan guiding you. It needs only your email address: no card and no contract.
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About the author
James Purse is a Director at Project7, a UK operational transformation consultancy whose approach is grounded in Toyota thinking, and has nearly 20 years of practitioner experience in Lean, leadership and performance improvement. He works with manufacturing, engineering and infrastructure organisations to find what is really limiting performance and to fix it alongside their own teams. James Purse on LinkedIn