How legal would it be to use some elements of the Half Life universe in my non comercial, indie game?
I'm planning to make a simple, HTML5 game, that would use some elements of the Half Life universe. Basically, it would be a 2D Portal clone, but it would have it's own story, and portals would be ...
I have created a multiplayer browser game. The game is completely free (donations are welcome) but I would like: (a) to protect my concept in some way. (b) to provide legal notes that the user ...