1. Deus Ex
Deus Ex arrived at a time when most games asked you to shoot first and move on, and instead built a sprawling conspiracy thriller where almost every problem had multiple solutions depending on your playstyle, your upgrades, and how much you were paying attention to the world around you. The ambition was staggering: a first-person shooter, an RPG, a stealth game, and a genuinely provocative political thriller all collapsed into one. It remains one of the clearest examples of a game that trusted its players completely, and that trust is exactly what made it legendary. | © Ion Storm