I have not played much SS13 apart from Colonial Marines, just a few hours of Goon, but in that time I have made an observation: Chaos is a core element of SS13. In Goonstation, the chaos is always there, omnipresent, and in the forefront. Despite its inherent randomness, it grows stale. Colonial Marines is different: the chaos lurks behind the scenes, even as the briefing devolves into a bloody chair fight, there is an order to the madness, briefing ends and the marines go to the Alamo. For those on the ground, the chaos there is not the chaos of clowns or vampires or farts or lings. It is the chaos of War, the twisting of orders, as the benos press against the marines' cades. On the Almayer, there is order, usually. But when that order breaks down, the chaos that ensues is so much more than the chaos of other servers, it is a struggle against loss, not against boredom. The CL breeds greenos, an MT bombs the brig, the chef gibbs a marine, a researcher nuggets someone in the climax of a twisted game of conspiracy and madness (actually happened to me once). Chaos is not the norm shipside, which makes it so much better when it occurs. That is why I play CM.