If we're talking Forum Games, I've always been partial to "The First Thing", although "Good vs Evil" and "Moderators make you lose count" can be good for a laugh. In a more in-depth way, I quite enjoyed the forays I had into Mafia/Werewolf/Fallen Angels (though my second go my heart wasn't really in it); there hasn't been one of those run for a little while.
Otherwise, I have a deep love of the LEGO games - I got into them way back when LEGO Star Wars first came out, and have played almost every one of that type since. Otherwise, I quite enjoyed the first couple of Ratchet & Clank games, and the God of War series (got very into 1 and 2). I liked XCOM: Enemy Unknown, though I played that on super easy mode - and though I haven't played XCOM2, I really like watching videos about it. The original Starcraft and the Diablo series I've got a big soft spot for, I've only played Wings of Liberty (the Terran campaign) for Starcraft II, but enjoyed that thoroughly.
Also I like playing escape games. My favorite is horror game like Lab. I had a fantastic experience in LA, we booked with friends a room after reading the reviews about Quest Factory rooms . We felt like we were heroes of some horror movie. Impressive decorations and spooky atmosphere. It's not like a horror video games 'cause it's for real.
Well since we resurrected a thread might as well add to it. But I've been playing a lot of 7 days to die recently. Quite a bit more of a challenge then minecraft. It does take a bit to get used to the voxel way of doing blocks.
I have a game that marked me deeply: Gran Turismo. It was from the age of 7 that I discovered car simulation. The game actually taught me the basics, and since then I have fallen in love with the automobile <3