Well, this is not another one of those "recommend me a game" or "favourite games" thread. At least, it is not intended to be for the most part. Instead of just saying what is your favorite game, explain why it is! You don't have to mention only one, game, mention 2-3-100, as long as you provide a good reason why... That way we can see what is the thing that makes a game so particular to everyone. I will do the start. My all-time favorite game is Marathon series. It is because of it's complex story-line, that can be reviewed again and again, until you figure out what the heck is going on. (Usually, you must play the games twice to understand... ) Another game that had drawn my attention was unreal 1, at the time it came out. I loved it's adventurous sceneries and backgrounds, presenting a world that I wanted to be in. I don't think games like those 2 come out anymore. Unreal and marathon can be played both as an adventure game and a shoot-them-all-up-and-do-it-again style. These are games that despite their age keep me playing them even now, frequently.