Hor+

Hor+, or horizontal plus, refers to expanding the horizontal component of the FOV while keeping the vertical component roughly or exactly the same. This is often considered the ideal solution for widescreen games, as it grants widescreen users a wider picture compared to 4:3.

Cube 2: Sauerbraten

Cube 2: Sauerbraten (German for "sour roast", also known as Sauer) is a cross-platform, Quake-like first-person shooter that runs on Microsoft Windows, Linux, FreeBSD and Mac OS X using OpenGL and SDL. The game features single-player and multiplayer gameplay and contains an in-game level editor, its main feature. The game engine is free and open source software, under the zlib License, with commercial support available from the developer's own business counterpart, Dot3 Labs.

Gangland

Gangland is a strategy/action game from MediaMobsters and Whiptail Interactive. The plot is pretty much completely described by the game's intro text: "Four brothers have come to America. Three are having the time of their lives in the new world. The fourth is there to kill them." You are the fourth brother, in case it isn't completely clear.

War Rock

Free-to-play online FPS, which had widescreen support at one time. Is anyone still playing this?

Terminator 3: War of the Machines

Terminator 3: War of the Machines is a team-oriented multiplayer FPS from Clever's Games and Atari. It is based on the Terminator 3 universe (having loved The Terminator and hated T2, I haven't seen T3 and can't comment on whether the game follows the movie or not). It takes place in the year 2029, where the machines are attempting to take over the world, and the humans are trying to stop them. You play as a grunt on either side in one of the many battles that occur. Gameplay closely resembles Battlefield 1942.

Quake 4

Quake 4 is the fourth major installment in the Quake series. It is a story-based, single-player game. This is in contrast to Quake III, which focused solely on multi-player. Quake 4 is a continuation of the storyline from Quake II.

Street Legal Racing: Redline

Street Legal Racing: Redline is the sequel to Street Legal. You start out as a rookie with $20,000 to buy a vehicle, tweak it, and compete in illegal races for more money. The car building component has a great amount of detail, featuring 100 interchangable parts down to the crankshaft and pistons, and custom paint jobs with brushes and stickers.

Devil May Cry 3: Dante's Awakening

Dante's past is now revealed as Devil May Cry returns to its roots. Master Dante's multiple fighting styles while battling never before seen demons and new characters as you fight your way towards a brutal confrontation with Dante's mysterious twin brother, Vergil.

Splinter Cell: Double Agent

Veteran agent Sam Fisher is back. But he's never faced an enemy like this before. To stop a devastating attack, he must infiltrate a vicious terrorist group and destroy it from within. For the first time ever, experience the relentless tension and gut-wrenching dilemmas of life as a double agent. As you infiltrate a terrorist organization in its American headquarters, you must carefully weigh the consequences of your actions. Kill too many criminals and you'll blow your cover. Hesitate too long and millions will die. Do whatever it takes to complete your mission, but get out alive.

Gothic 3

Gothic 3 is a fantasy-themed role-playing game for Windows from the German game developer Piranha Bytes. It is the sequel to Gothic II. Although widely available in English, the native release of the game is German.

Bang! Howdy

Bang! Howdy is a 3D online strategy game, in a steam-powered wild west world, from Three Rings Designs. It is available for Windows, Mac, and Linux; and offers full-screen and window gameplay.