Incomplete

Multiplayer take on Darwinia. Indie game darling "Darwinia" realized in multi-player fashion.

A "remote cousin" of the Heroes of Might & Magic series, King's Bounty : The Legend combines turn-based battles and real-time exploration in a lenghty singleplayer campaign.

Titan Quest is an action RPG by THQ, in the vein of Diablo II. The game is in the historical fantasy genre. Titan Quest is a 3D 'hack and slash' (acton RPG) featuring monsters inspired by ancient mythologies. It has gorgeous graphics, day/night cycle, ragdoll animations, WYSIWYG loot system - and of course, heaps of equipment to collect.
Immortal Throne adds in a whole new chapter (all-new places, quests, monsters and loot), a new mastery with its unique skills, and an array of other new gameplay elements.

The Chronicles of Spellborn is a MMORPG, developed by Spellborn International and distributed by Frogster Interactive, set in a post-apocalyptic fantasy world. Spellborn uses the Unreal Engine, featuring a so-called European Art approach and contains notable contributions from Jesper Kyd.

Spellborn distinguishes itself from other MMORPGs by emphasizing the focus on story line, separating the look and the statistics of gear, integrating Player vs Environment and Player vs Player and offering combat that is fast paced and more reliant on player skill.

Switchball is made by Swedish developer Atomic Elbow, which was released for Microsoft Windows on June 26, 2007. Switchball is an intricate puzzle game set in a stunning 3D world. Control an ever-changing ball along a narrow winding course suspended in midair. Solve your way through challenging levels jam-packed with obstacles, traps and mazes. Morph the marble ball with metal, electric and lighter-than-air properties to more easily get through each area.

WOW is the blockbuster MMO from from Blizzard, set in their Warcraft universe. I did this DR the same week Wrath of the Lich King came out, so this could be considered the WotLK client.

This DR is out of date for the current state of the game (June 2014). Please see the entry for Pandaria.

Pure is an arcade ATV racing game. It lets you build and upgrade your quads piece by piece and drive them around multiple-track circuits in outdoors locations. Catch some big air, perform surreal tricks and use nitro boost as you compete against a dozen AI opponents. The game also features both LAN and online multiplayer modes.

Left 4 Dead is a multiplayer first person shooter from Valve, inspired by recent "zombie apocalypse" movies such as 28 Days Later and I Am Legend. You and three other players must cooperate to progress through a series of environments while fending off an unending onslaught of virus-infected ghouls.

Aquadelic GT is a motorboat racing game with crazy weapons and power-ups. It features a mission-based campaign mode that lets players roam freely around various locations, enter races or complete taxi/delivery tasks to earn cash & reputation.
Also known as Power Boat GT.

Spectraball is an indie game that combines elements of platforming, puzzle solving, addictive game play, and stunning visuals to deliver an experience that sets a new standard for the genre. In December 2012, Spectraball received a major update and is now dubbed Spectraball: Extended Edition.