Posted on 5 October 2012
We are pleased to announce that anyone who has bought GameMaker:Studio from our website can now claim a Steam Key which can be used to redeem a free copy of the same product on Steam. You need to have the Steam version to upload any games to Steam Workshop.
It is very simple to do by selecting Support -> My Licences on the main yoyogames website http://www.yoyogames.com/my_licences and then do a License recovery or Get Your receipt, the Steam Keys will be part of your license information.
NOTE : You must redeem the Steam Keys in the correct order so always start with GameMaker:Studio Professional before attempting to redeem any of the other DLC modules.
Any new purchases from our website will automatically get a Steam Key for the same product and any modules on Steam.
We look forward to seeing your great games and ideas on Steam Workshop.
The YoYo Team...