Nothing. P2:CE is non-profit and fully free to play without any micro-transactions or the like. All you need is to own Portal 2 on Steam!

Yes. You need to own Portal 2 on Steam to download P2:CE. If Portal 2 is installed, P2:CE will automatically detect and mount it. We're planning to add the ability for P2:CE to download Portal 2 for you if you don't have already.

Yes. That's planned for release.

Yes. Alongside Portal 2's co-op mode, you will also be able to host dedicated servers with more than 2 players.

We're not ruling VR out completely, but don't expect VR support any time soon.

Windows and Linux on x64 only. You need a 64-bit processor to play P2:CE.

No, we unfortunately don't have puzzlemaker's source code, so supporting BEEmod is not possible. Instead, we'll be rewriting puzzlemaker from scratch in the future, and we're going to be working closely with BEEmod developers to make it the best it can be.

We have an issue tracker for P2:CE-specific issues/enhancements here Some examples of P2:CE-specific issues/enhancements: new gel types, portal 2 bugs that should be fixed in P2:CE, portal 2 entity-related suggestions.

Issues that affect more than one game on Strata should be reported on the Strata Engine issue tracker Some examples of Strata-Engine issues/enhancements: Performance enhancements, Panorama UI feature requests, hammer bugs, hammer features.

Yes we do. It can be found here .

The source code of the wiki is available on github .

Yes, we have many open source projects that anyone can contribute to! GitHub makes it really easy - all you need to do is fork a repository, commit changes to your fork and open a pull request to ours.

Our GitHub organization can be found here .

You can also apply to become a member of the team here .

Release date is to be determined.