The Stanley Parable is the best game you should never play. I can have a compromising effect on your state of mind. :dry:
As the full list would be too long, I'll just put the names of all time favourites 1) Battlefield 2 (project reality) 2) Planetside 2 3) AoE 2 4) Red alert 2 5) Amnesia - The Dark Descent 6) Minesweeper
1. Total War: Rome II 1. Tom Clancy's EndWar 3. Sins of a Solar Empire: Rebellion 4. Star Trek Online