I demand it!

Why are there no Quake 3 Zombie mods? You would think that would be the one of the highest demanded mods, especially since the Quake 3 engine is GPL'ed. The Quake 3 engine would probably spit out some amazing zombie mods. I would love to write one, but the most OpenGL I have ever done is spinny things on a pictured background. I demand someone make one, now.