24. Diablo PC role playing games were never really known for their adrenaline-pumping action or their mainstream appeal. Diablo changed all that. Utilizing a simple point and click interface, cutting edge graphics, and randomly generated levels, Diablo sprang onto the sales charts in January of '97 like a Prime Evil out of Hell and changed the way we role play on the PC. The game also featured a dark gothic style complemented by Blizzard's unique sense of humor. Add in extremely customizable character classes and literally thousands of items, stir, and serve online for maximum effect. Were it not for Diablo, modern day games such as Baldur's Gate, Planescape: Torment, or Divine Divinity would have never seen the light of day.