My current rotation is as such (all on PC atm, taking a console break)
Civilization V: Large map, epic from ancient era as France (Napolean) focusing on Economic tree and Order on Chieftain difficulty. Map has currently 6 other Civs, lots of war and I am technologically behind but have enough sea power to keep the other stronger Civs at bay.
Far Cry 3: Not fond of the save system, and my progress is in the 16-18% range. Not particularly caring about full completion or trophies since all the trophies are on uPlay (Ubisoft network) and not on Steam, even though the game launches through Steam. Using invincibility cheat.
Diablo III: Recently started playing this one again, after an 8-12 month break. Good on Battle.net for not deleting characters or accounts due to inactivity. The game is a lot better than at launch. The auction house being gone is not big deal. Drops are fairly decent. The only oddity is that all my chars are back in Normal difficulty for some reason.
Skyrim: I've completed just about everything to do. Not aiming at full achievement set and I've started to goof off a little... for example there is a death warrant out of me in Solitude.
Sims 3: My initial impression wasn't very good but it has grown on me. I would someday like to get some of the add-on packs. I created a family based on my best friend's childhood home, creating the characters based on how (close enough) I can create Sims of his parents and his brother. I plan on trying to create my own town, or maybe just a custom house, in the future.
Games installed but out of rotation due to reliability (crashing) issues: Goat Simulator, Next Car Game.
Games installed but on a break: Quake 3
Games installed but can't play due to misplacing game disc: Sims 2 (which I prefer) and has almost all the add-on packs I had picked up at thrift stores.