I'm sorry but that is not very playable even when it only renders to a quarter of the screen, especially compared to Wolfenstein 3D on similar hardware. It was

I'm sorry but that is not very playable even when it only renders to a quarter of the screen, especially compared to Wolfenstein 3D on similar hardware. It was also quite clunky in terms of interface. The guy on the video spends like 3 minutes trying to pick up a sack on the floor before just giving up.