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The Club is a unique shooter from Bizarre Creations and Sega which is almost entirely score-based and competitive with leaderboard support.

Developed by TimeGate Studios, F.E.A.R. Perseus Mandate is a standalone expansion based in the F.E.A.R. universe.Players follow the exploits of a second F.E.A.R. team as they battle to help control the Armacham "incident". The timeline for this game runs parallel to the original F.E.A.R. and the first expansion, F.E.A.R. Extraction Point.New weapons have been added to your arsenal including the weapons from the first expansion. Some nasty new enemies have also been added to make your life miserable.Gameplay is the same as the original F.E.A.R.

Tilt the floor to roll a ball through an obstacle course before time runs out. Neverball is part puzzle game, part action game, and entirely a test of skill.
Also found here is Neverputt, a hot-seat multiplayer miniature golf game using the physics and graphics of Neverball.

Neverball and Neverputt are known to run under Linux, Win2K/XP, FreeBSD, and OSX. Hardware accelerated OpenGL is required. A 500MHz processor is recommended.
Download Free here: http://icculus.org/neverball/

Test Drive Unlimited is the ultimate automotive experience for car and bike enthusiasts alike. Visit the most sophisticated car and bike dealers to purchase new vehicles or simply take them for a spin. Collect and trade rare performance parts and customize each vehicle to make it one-of-a-kind. Test Drive Unlimited challenges players online to experience the most exotic and fastest vehicles on more than 1000 miles of diverse Hawaiian roads.

Players take on the role of Belial, who was recently freed by the defeat of Lucifier in the previous Painkiller games. Belial is out for revenge on those who imprisoned him due to his unique lineage of having a demon mommy and an angel daddy. Bad divine and demonic creatures! No! Don't touch! The gameplay is essentially the same as the previous Painkiller games. So if it moves, kill it. There are new weapons in the game along with the old classics which have been given a demonic makeover. You are an outcast with no people to call your own.

Developed by Valve, Team Fortress 2 is a class-based, multiplayer FPS. Players choose teams and then compete against one another with various winning objectives such as "capture the flag". There are nine specialized classes that the player can select. Players are encouraged to work together as teams to compensate for the weaknesses of different classes. The game has a unique, cartoon style which allows you to enjoy your repeated deaths at the hands of your turncoat friends.

Developed by Black Hole Entertainment, Warhammer: Mark of Chaos is an RTS set in the "Old World" of the Warhammer universe.The focus is on the battles with minimal resource management. The battles are large with multiple units comprised of up to sixty characters that have many tactical formations. As units battle they will gain experience and grow more deadly.

Winner of over 50 Game of the Year awards, Half-Life set new standards for action games when it was released in 1998. Half-Life: Source is a digitally remastered version of the critically acclaimed and best selling PC game, enhanced via Source technology to include physics simulation, enhanced effects, and more.