The Rune SDK works with common development tools like Vite, Webpack, and Create React App. When you open the URL provided by your build tool, you should see your multiplayer game running inside a mock Rune app.
To simulate the multiplayer experience during development, Rune runs many instances of your game side-by-side. Here you can emulate network latency, game restarts, etc.
Run on Your Phone
You can also test your game on your phone. Just connect to the URL provided by your development tool and you'll see a development UI for testing the multiplayer experience. You can also test how your game works on a phone by using Chrome Developer Tools.
Sharing Playtesting Links
In case you want other devs to help you playtest your game, you can upload your game to get a playtest link that you can share with them. This link will work even before the game has been reviewed.