I am enjoying forge very much. In halo 3 my friends and I would make some great maps specifically for an infection gametype. So naturally i have been doing the same in reach. THE PROBLEM is that when I try to play infection on my maps in custom games it says the game type is incompatible w/ the map variant, could someone please tell me what i have to do in order to fix this?
You need to have at least one safe haven on the map, even if you dont use them. To place one, in the forge lobby change the gametype to infection, and place a hill marker and go to advanced options on it. Change the label to "inf_haven". It should work after that.