I have my doubts about it but prefer to ask before regrets, can i design houses parks etc for a game with ue4 or its necesary to use another extern programs like maya blender etc?
I hope you’ve downloaded UE4 and found the answer for yourself by now, but in case you didn’t…
You can definitely block out a game level in UE4 without any external tools, but if you want anything beyond grey boxes you will probably want to make your models in another package. I’m not saying that you can’t get detailed models in UE4 using the CSG tools, but it would be a lot more efficient using a modelling package like 3DS Max, Maya or Blender.