You are now able to activate your standalone copy of GameMaker: Studio on Steam!

How to activate on Steam:

1. Install the Free version of GameMaker: Studio from Steam.
2. Go to http://www.yoyogames.com/my_licences.
3. Enter your email address in the Licence recovery section.
4. Wait for the email from YoYo Games containing your licence information.
5. Enter the Steam key(s) from this email into the "Activate a Product on Steam.." option on Steam.
6. Enjoy using GameMaker: Studio.