Can someone please answer this for me? i don't want to install HL2 if i do not have to. do i just need the SDK source to play or do i need it and HL2 installed to play? or just HL2? please reply. EDIT: Sorry for the double post wont happen again. cokemonkey11 helped me out.
You need the SDK Base.. but you can just go ahead and install empires and then run it. It will download all the necessary files if you don't have those installed.