I would like to work with my GMS 1.4 license, but I did not understand if it could. Sorry for my English.
in the description, they only said that you need to use GameMaker to make your game, so, you can use any GameMaker version like gamemaker 8 or your version (that's GMS 1.4)
Thanks for the reply
This was confirmed by Yoyo on the GMC, any version is okay. (Probably a bit late to confirm it now, but... eh. Better late than never.)