Native

The game requires no modifications to support surround resolutions

Batman: Arkham Origins

The dark knight returns in what is in fact a prequel to the two Arkham games previously released. Not developed by Rocksteady Studios this time around, the weakest title in the series is also the first one not to be marred by GFWL-related issues, and to feature a multiplayer module.

Retrobooster

The cave shooter mechanics of yore, coupled with today's graphics. As the fearless pilot of a thruster-powered space ship, you must destroy aliens and rescue civilians whilst avoiding to bump too harshly into the scenery.
If Retrobooster's 3D models are arguably not the most detailed, the subtle physics and the special FX are indeed... really slick. Impeccable flightstick support and a DRM-free demo always impress, too.

Titanfall

Titanfall is an upcoming first-person shooter video game developed by Respawn Entertainment and published by Electronic Arts as an exclusive for Microsoft Windows, Xbox 360, and Xbox One. The game was officially announced as Respawn's debut game at Microsoft's E3 2013 press conference, and is scheduled for release on March 11, 2014.

The Stanley Parable

The Stanley Parable is a first person exploration game. You will play as Stanley, and you will not play as Stanley. You will follow a story, you will not follow a story. You will have a choice, you will have no choice. The game will end, the game will never end. Contradiction follows contradiction, the rules of how games should work are broken, then broken again. This world was not made for you to understand.

Trainz Simulator 12

Trainz Simulator 12 is a 3D railroad simulator that uses DirectX or OpenGL with multiplayer and the option of downloading 3rd party tracks, railcars, and objects.

Jazzpunk

Jazzpunk is a comedy adventure set in an alternate reality Cold War World, plagued with corporate espionage, CyberCrime, and sentient martinis. Gameplay is inspired by spoof comedy films and cartoons of yesteryear, with a focus on weird gadgets, exotic locales, and open-world style exploration.
(source: steam store page)

Spelunky

Upgraded and expanded remake of the popular freeware game from 2009.

Spelunky Classic

Explore mysterious caverns to collect treasures while avoiding traps and monsters.

Spelunky is a freeware game first released in 2009; it was renamed to Spelunky Classic following the release of an enhanced commercial version in 2013.

Unepic

Embark on a strange adventure in a vast castle with gameplay inspired by the Castlevania series.

Mark of the Ninja

In Mark of the Ninja, you'll know what it is to truly be a ninja. You must be silent, agile and clever to outwit your opponents in a world of gorgeous scenery and flowing animation. Marked with cursed tattoos giving you heightened senses, every situation presents you with options.
(source: steam store page)