Dota 2 is an action strategy title for the PC and Mac. It is being developed by Valve Corporation, and is the stand-alone sequel to a popular mod created for WarCraft III, called Defence of the Ancients (Dota), which is itself loosely based on a custom map for the original StarCraft, called Aeon of Strife.

Call of Duty: Black Ops II is a first-person shooter video game, developed by Treyarch and published by Activision for Microsoft Windows, PlayStation 3, Wii U and Xbox 360. It is the ninth game in the Call of Duty and a direct sequel to the 2010 game Call of Duty: Black Ops.

Half-Life 2 is a shooter game developed by Valve Corporation and released on Mac OS, Microsoft Windows, PlayStation 3, Xbox.