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Need for Speed Rivals

Two factions, one big map: Rivals combines the dual career mode and high-speed freeway chases of 2010's Hot Pursuit with the openness and upgradeability of 2012's Most Wanted. New features include dynamic weather and optional MMO-like connectivity.

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.

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)

Life Goes On

Sacrificial teamwork: the essence of coo(rpse)peration.

The Incredible Adventures of Van Helsing

This is the first game in an upcoming trilogy of story-driven Action-RPG. Monster hunter extraordinaire Van Helsing wields swords, guns and spells while exchanging sarcastic comments with his ghost ladypet. On the whole the game is strangely reminiscent of the original Dungeon Siege, but maybe that's just because my favorite mule back then was named Katarina.

Assetto Corsa

Assetto Corsa is a racing game/simulation with a strong focus on realism.

PixelJunk Monsters Ultimate

A recent port of an old and popular PS3 game. First PC port from the developer Double Eleven.

Wreckfest

A racing game inspired by Destruction Derby (1995) and the classic FlatOut series, Wreckfest features detailed physics and damage for both on-track objects and vehicle models.