Tried searching for the answer but couldn't find it. I just bought King Arthur 2 on Origin as it was half price but they don't have the Dead Legion's DLC there, now I've gone on Green Man Gaming and Gamers Gate and both product descriptions say you need the base KA2 on Steam to play but somebody in the comments section on GMG stated you don't need the base game on Steam. Now Steam won't let me register my Origin bought KA2 on there so if I bought Dead Legions could I play it independently of it being on Origin or would I have to buy a 2nd copy of the base game on Steam to play Dead Legions ( it goes without saying the 2nd option is not something I'd be wanting to do). Thanks for any help.