Installing
Just launch the installer when download is finished.
Beginner's tutorial
A video tutorial and a getting started page are available on the wiki.
Documentation
Lots of examples are provided with GDevelop. Check also the online help on the wiki.
Community
Do not be shy!
Come on GDevelop forums.
If you like GDevelop...
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Donations can be made through Paypal and you can choose the amount of the donation!