Quoting willie sanderson,
Quoting AM_Shark, reply 1i was not able to purchase it because i did not have the Steam version. Steam said sorry you need the game to buy this.That is very hellpful information. No map pak for me.
Wow. Another fail by steam. If you own the game, you should be able to buy other content/dlc/expansions from steam for that owned product.
Welcome to HOW STEAM WORKS. It's the same if other sites get distribution rights. If you don't have the Steam version you can't get the DLC through Steam either if you don't have the main game through them. Much like you're seeing what is happening now. And people say STEAM IS GREAT lmao