Requirements: Unreal Tournament, UE4 license   Our engine poll clearly demonstrated an interest in Source and UE4 challenges. Since most of our community comes from a BSP background we can imagine that many will be reluctant to build something in UE4. That’s why we’ve come up with the UE4 Whitebox Challenge. You are free to use a modeling program but layouts can still be done with good old brush work. So there’s no excuse now!   In short: Mapcore challenges you to create a UE4 whitebox level.