Rob "Doublez-Down" Collins is a mapper best known for his Unreal Tournament deathmatch levels and Unreal single-player levels.
- Return the Heart
- Gothic Resurrection
- Falcon Outpost
- Gothic Resurrection Special Edition
- The Fifth Vortex: Ehactora's Story
- De'Nasha Breeche Monastery
- Doublez-Down was a mapper for Nali Chronicles, however the map he was working on had to be cut due to his leaving the team during its production.
"Two of these applications have already been processed and I'm proud to announce that Rob Collins and Willis are now members of the Nali Chronicles team."
Pictures of the Map he had started making: