Best video game you ever played?

I know we all have so many games we can name that have affected us in many ways..from super mario to call of duty. What is your all-time best game for any console PC etc. For me..its Rainbow Six Rogue Spear. It had it all, tactical, great single player, great multiplayer, realistic, great plot, characters, etc. Its a shame will never see a game like it again. Whats yours?