I’ve been having troubles firing up Shootergame since about version 4.6. While trying it again yet today with 4.8 source code and UE 4.8.1. I noticed something interesting. Shootgame dies or shows about 4 frames of the intro movie until I exit my Steam account. Then it works just fine. What Gives? Is shootergame not compatible with having steam run in the background?
The shootergame project has an invalid AppID in its config and that causes steam to lock up the game because it doesn’t authenticate it.
Change the AppID in YourProject/Config/DefaultEngine.ini to use 480.
480 is the SpaceWar AppID, Valves Multiplayer Development AppID.