User blog comment:Edgeofnight/A few important announcments/@comment-25034963-20150215013147/@comment-24285234-20150215153227

That is up to the creators. Several map games have ran multiple times, including Alt 92 and Almost 2. If the creator is inactive, then you can request to adopt the game, as their will soon be an adoption process. Some of the major franchises, Almost, Shattered Stars, Civ, etc. Will be unadoptable.