46. Battlefield 2 (2005)
With the introduction of widespread broadband connections in the mid-aughts, developers were able to rethink how they approached multiplayer modes in video games. Single-player campaigns become an afterthought as developers began building games around online modes almost exclusively. Battlefield 2 was one of those games, all but requiring players to look like telemarketers by wearing headsets for a strategic edge. It won numerous awards for being the best PC game of 2005, and has spawned multiple sequels.