Codename: Gordon

Black Mesa: Definitive Edition includes performance improvements with a higher frame rate in some levels and visual upgrades, as well as all new and expanded Xen levels.

Half-Life: Alyx is Valve’s VR return to the Half-Life series. It’s the story of an impossible fight against a vicious alien race known as the Combine, set between the events of Half-Life and Half-Life 2. Alyx Vance and her father Eli mount an early resistance to the Combine's brutal occupation of Earth.

Black Mesa is a re-envisioning of Valve Software's classic science fiction first person shooter, Half-Life. Powered by Source Engine, You will re-visit the inaugural role of Gordon Freeman and his memorable journey through the Black Mesa Research Facility. Expect detailed environments to explore, a huge cast of characters and experimental weaponry. All-new music, voice acting, choreography and added dialogue give way to a more expansive and immersive experience than ever before.

A first person shooter extravaganza where you take the role of Serious Sam, a badass killer whose goal is to defeat monsters commanded by Mental, an extraterrestrial entity that wants to destroy humanity. Serious Sam is a high-adrenaline arcade-action shooter heavily focused on frantic arcade-style single player action. In a world where cyberpunk meets fantasy-fiction and advanced technology is mixed with black magic and psycho-powers, Sam travels through the beautiful world of ancient Egypt and several diverse planets, confronting countless Mental's minions on his way to the Mental's base.Key Features Frantic Arcade-Style Action - Fight your way through 15+ nightmarish warriors in Mental's army, including the charging Sirian Werebull, screaming Headless Kamikaze and other crazy monsters, and finally challenge the multi-story Ugh-Zan boss!

Holodrive is a super fast-paced collectable 2D multiplayer shooter. Create your robot, customize it and jetpack your way to victory!

In this exploration-heavy 2D action game, use your demon sword to interfere with the past, create platforms, and shield yourself from danger to explore a dystopian cyberpunk world depicted in gorgeously animated pixel art.

Alien Hominid Invasion is a co-op run ‘n’ gun packed with chaos, mayhem, and a whole lot of explosions. Unlock and equip an arsenal of weapons and boosts, level up, then beam down to invade Earth with up to three other friends. Abduct intel from your enemies to sabotage their plans, observe the oddities of human life, blow up bosses, and mutate into a variety of powerful Alien forms in order to take down the not-so-secret Agents that are dead set on ruining your day.

First contact didn't go as planned, when aliens woke Murray Mendelson up from his afternoon nap. Pulling the trigger first has drawn Murray in to full scale war with these alien visitors, and they’ll stop at nothing to destroy him. Armed with his musket and inconsolable rage, Murray must defend his home against all odds. Why are the aliens only attacking this one house? Who knows?! Shoot first and ask questions later in this endless fast paced arcade shooter, and keep those pesky aliens off of Murray's perfectly manicured lawn!

Defy Gravity is an action platformer that is a mix between classic platforming and gravity based puzzle solving. Kara, our heroine, has access to a unique gameplay mechanic that she uses to manipulate the world around her. She has a gun that is able to alter the laws of physics through the creation of pockets of gravity and anti-gravity. By mastering the use of these abilities Kara is able to augment her jump in order to almost fly past obstacles. These powers can also be utilized to move objects that block her path and platforms that Kara stands on in order to traverse the levels.

Journey through a surreal, vivid and highly stylized world filled with mystery, wild high-speed traversal, endearing characters, and massive enemy encounters. The Void beckons…

Humanity is under siege as the full force of Mental’s hordes spread across the world, ravaging what remains of a broken and beaten civilization. The last remaining resistance to the invasion is the Earth Defense Force led by Sam “Serious” Stone and his heavily-armed squad of misfit commandos. Croteam returns with a high-powered prequel to the Serious Sam series that scales up chaos to unprecedented levels. The classic Serious Sam formula is revamped by putting an unstoppable arsenal up against an unimaginable number of enemies that requires players to circle-strafe and backpedal-blast their way out of impossible situations.

Fight your way free in this 8-bit-inspired version of Furi's first boss fight against The Chain. Frantic action, nervous controls, a blend of shoot and sword fight reimagined in 90s style. Only 1 boss fight! A gift to Furi's fans.

Discover a vast alien world. Fight the ferocious local fauna and killer machines. Reveal its secrets and find a way to escape. The Mobius Machine is a side-scroller action platformer with dynamic combat and heavy emphasis on exploration.