Copy Strategy Game Source to new project


I’m in the start of a new project. Since I’m still learning the UE4 pipeline, I’m currently fiddling around with no big success.

Basically, I’d like to copy the camera behavior from the Strategy game demo to my game. I saw the source code in the strategy game folder and copied it to my game folder. I adjusted the DefaultEngine.ini accordingly to this but it doesn’t show up up as a selectable game mode in the world settings. I also recompiled the source code, but no avail.

Is there any tutorial how to achieve this?

(BTW. I created my project by using the topdown BP template… is this the problem?)