Top 20 Most Influential PC Games: 10-1

Big Download finishes up their "top 20 most influential PC games" feature, with EverQuest, the Ultima series, and Diablo all appearing in the 10-1 category. #4:
Blizzard sometimes creates games that refine formulas established by others. However, in the case of Diablo, they actually created a sub-genre: the action-RPG. Instead of turn-based gameplay, the hack-and-slash style of continuous action of Diablo became a huge hit.

Diablo's innnovation along with the fact that it was just fun to play, created a host of imitators. While some have made improvements to the action-RPG design, none have really achieve the same kind of popularity that the Diablo series have reached.