No. 4 Diablo 2
Copies sold: 4 Million
Year of release: 2000
If Diablo was already one of the most popular RPGs released, Diablo 2 only built further upon that. This sequel enhanced every feature the first one had already done well. Moreover, it introduced an online multiplayer experience, and allowed other characters to hop into your game at anytime. Fanatics say Diablo 2 is one of the best games ever made.
