Valve Corporation franchises

video game series

Counter-Strike (CS) is a series of multiplayer tactical first-person shooter video games, in which opposing teams attempt to complete various objectives. The series began on Windows in 1999 with the release of the first game, Counter-Strike. It was initially released as a mod for Half-Life that was designed by Minh Le and Jess Cliffe before the rights to the mod's intellectual property were acquired by Valve, the developers of Half-Life, who then turned Counter-Strike into a retail product released in 2000.

Dota is a series of strategy video games. The series began in 2003 with the release of Defense of the Ancients (DotA), a fan-developed action real time strategy (ARTS) custom map for the video game Warcraft III: Reign of Chaos and its expansion, The Frozen Throne. The original map features gameplay centered around two teams of up to five players who assume control of individual characters called "heroes", which must coordinate to destroy the enemy's central base structure called an "Ancient", to win the game. Ownership and development of DotA were passed on multiple times since its initial rel