Proper

HUD is proper in widescreen.

BioShock

Bioshock is Ken Levine's vision of a paradise lost. This first person shooter is considered the spiritual successor to the System Shock series. The game takes place in the underwater utopian city Rapture as it is in a state of impending collapse. You must survive the horrors that await.

Bioshock is a FPS developed by 2K Boston/2K Australia. It is set in a 1960 that got a big dose of science fiction.

Star Wars: Knights of the Old Republic

The game details events that occurred thousands of years before any of the Star Wars movies. A Sith Lord called Darth Malak is intent on destroying the Republic and needs a lightsaber swatting. Players can recruit several different NPCs and have active parties of three characters. Battles are a mix of turn-based and real-time actions. NPCs are a collection of humans, droids, and other assorted alien things. Party members develop based on class and player customization decisions. A lovely array of Force powers is available for your adventuring pleasure.

Neverball and Neverputt

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/

Turok 2: Seeds of Evil

You are the Turok Joshua Fireseed, who has been summoned to the Lost Land to defeat the alien race known as the Primogen. The collection of weapons available to Turok are arguably the best selection of weapons to ever appear in a first-person shooter. This game boasts an aiming system that allows for specific body parts to be targeted and "removed". Razor Wind = Carnage.

Sam & Max Season Two (Beyond Time and Space)

Sam & Max - Season Two is the continuation of the critically-acclaimed episodical point-and-click adventure series by Telltale Games based on the comics created by Steve Purcell. Season 2 contains a total of 5 episodes, which will be released over the next few months.Among the most notable changes from the previous season are an adjustable, in-game hint system as well as native support for non-4:3 resolutions, including 5:4, 16:10 and 16:9.

Sonic Heroes

Sonic Heroes is a platforming video game and the 8th installment in the Sonic the Hedgehog series, developed by Sonic Team USA and released in 2003 (Japan) and 2004 (North America) for multiple platforms. The game follows four teams of three characters, each of which has a unique subplot, and as Dr. Eggman begins another attempt at global domination, each team follows a separate path to stop him.

Team Fortress 2

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.

Warhammer: Mark of Chaos

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.

The Sims

Developed by Maxis, The Sims is a simulator of everyday life. The brainchild of Will Wright, this game allows you to create families of virtual persons and let them run wild. The virtual persons, or Sims, can be controlled directly by the player or allowed to make decisions on their own. Different personality traits determine how each Sim behaves and interacts with their environment. Players can create and furnish environments for their Sims or download user-created content online. Create your little-thug Sim, and let him breed with and bully all the Sims he wants.

Warsow

Warsow is a fast paced, free, first person shooter aimed solely at competitive play. It's currently still considered "in beta" as it's being updated based on community input, play-testers. While not having quite the popularity of other FPS deathmatch games like Quake3 or UT2k4, it has quite a following in the United States and most of Europe, and just had it's first cash-prize LAN event, CDC3.