You can do everything with the UE4!
But to create an entire game you need a little bit of time to learn everything, because you need to know how to use the engine, a 3d tool, a texture tool, a sound tool,ā¦
Here are some useful links:
https://docs.unrealengine/latest/INT/
https://wiki.unrealengine/Videos
https://wiki.unrealengine/Main_Page
But due to blueprints + the awesome community I personally would recommend you the UE4