We fight robots, play on certain maps, and trade. Or fight others.

This is the Ninja's Mercenaries. We want to kill all those robots Gray Mann created, or the ones alive. If we have Garry's Mod, we might pose another member of this group, or ourselves as a ragdoll. And we trade. I have a lot of hats, they are stacked up as the first thing in my inventory. And I only found one myself.