Since CEVO began operating in early 2005, Counter-Strike (v. 1.6) has been our core and most popular hosted game. With over 2,500 participants every season, and growing, this event features the widest array of divisions and value-added features. In Season 3 alone, registrants competed for a total of over $28,500 in cash prizes and the pride of being a CEVO Champion.

Counter-Strike (v. 1.6) is originally a game modification for Valve's highly successful game - Half-Life. Created by Minh "Gooseman" Lee and Jesse Cliffe, Counter-Strike features urban and rural combat between factions of Terrorists and Counter-Terrorists. The most popular mode of play is the one hosted by CEVO, team-based (5 on 5) bomb detonation. Terrorists make their attempt to destroy one of two target-areas on a map (location) using a bomb carried in a backpack; Meanwhile, it is the Counter-Terrorists' duty to eliminate the attacking Terrorist force and/or defuse their bomb before it explodes. Counter-Strike is an action packed and masterfully strategic game, its no wonder it has risen to among the most popular shooter games of all time.

Counter-Strike: Source was introduced as CEVO's second hosted game and shows every sign of remaining a popular addition for years to come. Counter-Strike: Source is a transfer (and tweaking) of the original Counter-Strike (v. 1.6) to Valve's Half-Life 2 Engine. Source has enabled the addition of new advanced graphics and technologies (such as ragdoll physics), to the classic Counter-Strike. The same as its predecessor, Counter-Strike Source is a team-based bomb detonation game.

In January 2006, CEVO announced expansion to Call of Duty, Infinity Ward's sequel to the original Call of Duty. Similar to CEVO's earlier hosted-games, Call of Duty features team-based urban and rural combat and bomb detonation. Call of Duty however takes realism to the next level, featuring armies (Germany, Britain and USA) and weapons based on World War II. Call of Duty is a yet another great strategic action game and has been an excellent addition to CEVO's line of hosted games.

Team Fortress 2 is the sequel to the game that put class-based, multiplayer team warfare on the map. This year.s most anticipated online action game, TF2 delivers new gametypes, a signature art style powered by Valve's next generation animation technology, persistent player statistics, and more.

America's Army (also known as AA or Army Game Project) is a video game owned by the United States Government and released as a global public relations initiative to help with U.S. Army recruitment.

The PC version 1.0, subtitled Recon, was first released on July 4, 2002. Since then, there have been over 20 updated versions released, the most recent being AA:SF (Overmatch) v2.8.3.1. All versions use the Unreal Engine. The game is financed by the U.S. Government and distributed at no cost. It was originally developed by the MOVES Institute at the Naval Postgraduate School.

Dead or Alive 4 (DOA4) is a fighting game developed by Team Ninja for the Xbox 360 video game console. As the latest entry in the Dead or Alive video game series, its plot follows the events of the 2001 title Dead or Alive 3. The game features twenty-two playable characters and many multi-tiered and interactive fighting arenas.

Gears of War is a tactical third-person shooter video game developed by Epic Games and published by Microsoft Game Studios. It was initially released as an exclusive title for the Xbox 360 on November 12, 2006 in North America, and on November 17, 2006 in Europe (excluding Germany, where Microsoft Game Studios did not publish the game after it was denied a rating).[3] A Limited Collector's Edition was also released, which included a disc of bonus content and an art book titled Destroyed Beauty that detailed much of the game's back-story. A Microsoft Windows version of the game was created with additional content and released in North America on November 6, 2007, with a Mac OS X version also confirmed.

Defense of the Ancients (often referred to as DotA) is a custom scenario for Warcraft III: The Frozen Throne, based on the "Aeon of Strife" map for StarCraft. The objective of the scenario is to destroy the opponents' "Ancient". The two teams' ancients are heavily guarded structures at opposing corners of the map. Players use powerful units known as heroes, and are assisted by allied heroes and AI-controlled fighters called "creeps". As in role-playing games, players level up their hero and use gold to buy equipment during the mission.

The scenario was developed with the World Editor of Warcraft III: Reign of Chaos, and was updated upon the release of the Warcraft expansion The Frozen Throne. There have been many variations of the original concept; currently, the most popular is DotA Allstars, which has been maintained by several authors during development.

Since its release, Allstars has become a feature at several worldwide tournaments, including Blizzard Entertainment's BlizzCon and the Asian World Cyber Games, as well as the Cyberathlete Amateur and CyberEvolution leagues; Gamasutra declared that DotA was perhaps the most popular "free, non-supported game mod in the world".