This is, to some degree, a reversion.
GameMaker’s announcement couldn’t resist a cheeky dig in that direction.
it’s possible for you to read more about the changes and about GameMaker in generalat the official site.
Game creation tool GameMaker is now free for non-commercial use
Game creation toolkit GameMaker, used in several indie hits, is now free for non-commercial use and has reverted to a one-time fee for commercial use.
