Super Mario Kart. Halo. World of Warcraft. Sonic The Hedgehog. Half Life. Zelda. Metal Gear Solid. Forza. Kick Off. Grand Theft Auto. Doom. Angry Birds. Where do you start?
It's a question that's going to require some serious thought, so don't rush in, take your time, and once you've settled on your top three games of all time, let us know in the comments below.
The games can be from any platform, but we'd like to see your choices listed in order or greatness - with number one being your all-time favourite.