1) Deus Ex - 2000
Yes, Deus Ex. The greatest step the PC has ever made towards total immersion in plot, character and interactivity. A game that truly made you feel like star of the show - the fulcrum in a global conspiracy upon whom everything hinged. It was a page-turning interactive thriller, fulfilling every action-hero daydream present in the big book of male insecurities. Hacking into mainframes without being detected, becoming a one-man killing machine as well as a creature of shadows and stealth and turning on your cruel masters in support of the little man. Who wouldn't want to be the hero?

Deus Ex's plot was always in flux - it delighted in putting you on the spot. Do you put the bloody icing on the cake of your defection by filling Manderley with bullets, or do you walk out the bigger man? Do you protect your brother in his seedy hotel room as Men in Black start banging on the door, or do you start running? In your Half-Lifes and Dooms, the bottom line was that you were playing a game. In Deus Ex, on the other hand, you were breathing a narrative that felt as if both it, and you, truly mattered.

There was some pure trickery too, points at which the game would pull the cybernetic rug from beneath you. Who can forget being shot like a dog on the street before waking up in the evil Majestic 12 base - and slowly realizing you were beneath the familiar halls of UNATCO? All this is nothing compared to the freedom Deus Ex forced on you: to use your own brain, think outside the box. Stranded on top of a building with next to no ammo and an enemy to one and all? Why not attempt to cushion your fall with cardboard boxes, jump down four stories, break your legs and crawl away at a painfully slow pace?

With its role-playing depth, its feeling of character ownership and countless ways to approach offing your foes, the fact we were never given a worthwhile sequel is among the greatest of gaming crimes. For sheer immersion, for so brilliantly disguising linearity, for convincing us that we were the center of our own little universe and for giving us orange when we wanted lemon-lime, it's number one. We wear our sunglasses at night, and probably always will.