What i'm more curious about is how fast they implemented Multiplayer and high quality maps without using third party assets, consider my impressed, even if it was team effort.
We were 2 people working exclusively with programming, and 3 people doing 3D. As you can see we have no fancy textures, just plain colours, and we saved a lot of time on texturing. We also had a guy doing the audio, and another who helped out with some level design.
