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Velvet Assassin is a stealth game from Replay Studios published through Southpeak Games set in World War 2. You play a female assassin/spy who performs stealth missions behind enemy lines during the war. The game is very much like Thief and Splinter Cell, with only a special "morphine mode" to distinguish it, allowing you special moves and limited invisibility. Despite not being a big budget game, Velvet Assassin offers rare hardcore stealth gameplay in a unique setting for the genre with nice graphics and good controls.

American McGee's Alice is a third-person puzzle/shooter computer game, which takes place in the Alice's Adventures in Wonderland universe. It was developed by Rogue Entertainment and published, distributed and marketed by Electronic Arts, and under the Sold-Out Software label as well. Alice was designed by American McGee, and featured music composed by former Nine Inch Nails drummer Chris Vrenna.

Faces of War is a 2006 world war 2 real time strategy game for the PC

Battlefield 2142 is a 2006 first-person shooter video game developed by DICE and published by Electronic Arts. It is the fourth game in the Battlefield series. Battlefield 2142 is set in 2142, depicting a war known as "The Cold War of the 22nd Century", in which two military superpowers – the European Union (EU) and Pan Asian Coalition (PAC) – battle for the remaining unfrozen land during a new ice age.

Source: Wikipedia

Far Cry 2 is a mission-based, open-ended FPS set in a fictional african country on the verge of civil war. The story is not even remotely connected to the original Far Cry, so this game is more like a Boiling Point fan's dream come true. Who needs Trigens when angry mercs are everywhere ?

In Flock! you control a flying saucer and must drive scared animals to your mothership through obstacles and traps. The game also features a proper campaign for 2-player co-op and a map editor.
Like in Switchball and a couple other "cross-platform" titles, the framerate is capped to 30 fps.

Defense Grid is a 3D singleplayer tower defense game. You must construct defensive towers of various types on predetermined areas to get rid of incoming alien swarms before they reach your mainframe and run with its power cores.

Zeno Clash is a first-person shooter/brawler developed by ACE Team. The game has an incredibly unique visual style and impressive graphics using the Source Engine from Valve. A PC exclusive, Zeno Clash controls and plays very smooth and is a must-play for fans of the genre.

The Hunter is a free to play PC game that recreates hunting wild animals in as realistic a manner as possible, on an open world island, based on various locations, including the islands and surroundings of Washington State in the USA and parts of Canada. The free game features one huntable animal type (Mule Deer), and subscribers can unlock other animals, along with a variety of guns, bows and lures with which to hunt them. More animals are planned for future game versions.