Lol.
I do not mind an fps game just nlt what I am looking for but if you know a chilled one ill give it ago.
Planet side 2 was added to steam yesterday. Installed, played 24mimutes and removed. Boring I thought.
Okay yeah, the free MP game market is, afaik, mostly shooters.
MMO RPG's we could go on for hours, but my guess is that's not exactly what you're looking for.
Well there's obviously Minecraft. Maybe Age of Empires Online, Tribes Ascend (FPS), Blacklight Retribution (FPS).
Gosh, harder to name a few than expected, other than shooters.