the co-op being described above seems already too much, multiplayer right? theres alot of work to tie those systems together, i still think a single player system may be a bore as like most created so far and i think everyone should take a look at the demos from torque game engine to see an idea.. i dont care much for creating a game based on what i want, but everyday this community talks about getting good looking demos for the engine... i say now we have the chance, we can definately create something moderately good for even a team of 2 people so i dont see why 5 or more should be working towards something too basic..

if you try a single player game, then you have to put alot more work into animations, sounds, models, all aspects, we mainly have coding skill... and dont see why we should aim to create anything less than what i've seen from one man teams of this forum..