There are a few ways to activate the new True 3D mode in Duke Nukem 3D: 25th Anniversary World Tour.
- 1 There's an option in the pause menu (during gameplay, pause the game and select Options > Video Settings > True 3D Rendering)
- 2. Press down on the d-pad during gameplay (default)
- 3. Press the "C" key on the keyboard during gameplay (PC version)
If you have any questions about this functionality, drop us a line at support.gearboxsoftware.com!