Games like Half-Life 2: Episode One

『UNBOUND PROVIDENCE』はレトロな3Dダンジョン探索アクションRPG。鉱山から繋がった未知の迷宮を探索しよう！

ASCEND and claim your rightful place as the Hand of the Empress. Become AB3, an immortal super soldier, in this action packed first-person shooter that combines old school style with new era gunplay.

Equipped only with a weapon that consumes your own blood, explore an ancient brutalist catacomb. Beware the Eyes of The Whispering Crypt. Find the 4 artifacts of desire. Confront God.

Welcome to UMAN - Become a cog in the machine - Work, sleep and don't ask questions - Collect your trash, hit your quota, consume, upgrade and meet your coworkers. But whatever you do... don't look into the eyes.

Join dangerous raids for loot or intense PvP battles in this new realistic military shooter set in a fractured multiverse. Fight in the quantum unstable zones over control of the active matter – the substance that bends time and space.

Embark on your creative journey of vehicle design, as you create and operate vehicles to survive this dangerous open world. Anymaker is a detailed and technical vehicle builder and survival game. Design your chassis, build your engine, connect components, and travel into the unknown.

Master the art of driving! Enjoy 50+ handcrafted levels with 9 vehicles and realistic car physics. No traffic — just pure driving skills. Unlock cars, test your skills in mini-games, or just drive casually without any worries!

Explore the forbidden catacombs of Paris, immersive and authentic experience of pure discovery and fascination.

This is a fight for survival. Xenomorphs swarm in overwhelming numbers. Every room could be your last.

SINGULARITY is a collection of 61 distinct games — from particle dreamscapes and detective puzzles to tactical combat and survival farming. Collect Embers in every level to grow and unlock more. The Particle Eggs keep expanding over time, so the journey never ends.

Play a major role in an evolving simulation of simulations. Explore endless 2D and 3D dimensions spanning nearly every game genre, with 50+ experimental prototypes and stories whose worlds, systems, discoveries, and ideas can become part of the greater experience.

CONVRGENCE is an atmospheric VR extraction shooter set in the procedurally generated, ever-changing Chernokamensk Anomaly Zone. Scavenge loot, fight bandits and hunt for mystical artifacts — all with your loyal dog companion by your side. But extract before nightfall, or face what lurks in the dark.

After years in prison, you return to a dark megacity ruled by a ruthless corporation. The only way forward is up - through countless floors of a heavily guarded skyscraper - to reach the corporation's leader and take your revenge.

Race through the streets in this third-person action runner, dodging obstacles or shooting them out of your way. Collect points, purchase powerful upgrades, and optimize your run to beat your high score. Can you make it to the top of the leaderboard?

Biovoid is a creature-building roguelike game where you slay hordes of hostile aliens. Combine a variety of cells and mutations to create game-breaking builds and evolve from a fragile hatchling to a deadly predator.

Fly, dodge, and score points — this is a real test of reaction and concentration, where every new record feels like a big victory over the ruthless cosmos.

A collaborative exploration and survival game for 1-10 players, set in a procedurally generated afterlife inspired by Viking culture. Battle, build, and conquer your way to a saga worthy of Odin’s patronage!

Cubed is both a puzzle and an arcade game for VR and non-VR.  Relax and get your mind off everyday life in puzzle mode.  Challenge yourself in arcade mode.  Or grab a friend and play arcade mode either as a team or as bitter rivals, stealing and sabotaging your way to victory!

No Emergency: Pestilence plunges players into the epicenter of a mysterious epidemic, where every arriving patient could be carrying a mutating pathogen, and a single mistake in a prescription turns the cure into poison.

A co-op puzzle heist for two. One of you breaks into a secret bunker. The other sits in the observation office, watching the bunker. A walkie-talkie is your only link. Talk to each other and find out how good your teamwork really is.

Open world zombie survival Coop game with base building, looting, crafting, vehicles, and exploration.

High intensity co-op roguelite space adventure party game for 2–4 players (or bots). Take on crew jobs, keep a failing ship alive, and survive procedural missions with endless exploration, light RPG progression, and real-time crisis gameplay.

Adoros is dying. A catastrophic Void Anomaly has torn open the planet’s surface, warping reality and unleashing forces no one fully understands. You are a Cube Crusader sent to crush the Anomaly, at any cost.

Sublight is a space bullet heaven roguelike, where you captain a powerful warship and carve through escalating waves of enemies. Upgrade your arsenal, unlock new ships, and experiment with countless builds to dominate the battlefield.

Shelve the products, unlock new skills, and use your unique methods to tidy up the mall. Enjoy the online co-op and online PvP with your friends, or go solo! Fill up the shelves and experience a sense of relief and satisfaction.

A terrifying 1–4 player co-op horror game set in a cursed mansion. Use flashlights, find clues, and survive the horrors within. Every decision matters. Can you escape before the curse claims you?

A sci-fi 80s retro shooter and bullet hell. Use your plasma cannon and bombs to repell an alien invasion. Either defeat the alien robots building and upgrading the blocks and turrets - or blow all of their blocks up! 20 straightforward levels.

Remember the RPG that defined a generation? ZENONIA is back—faithfully restored and now on Steam. Relive the adventure that kept you playing for hours, or experience it for the first time.

Run, jump, climb, glide, fly - or just fall in a way that somehow works. Doesn't matter how, just keep moving through this maze. How high do you have to climb to get out?

CELLS is a calm sci-fi trading game about goods, routes and decisions. Explore new worlds, build trade chains, mine resources and uncover the story of a broken network between the worlds.

POWDR is a high performance interactive particle sandbox featuring realistic fluids, sands, solids, interactions, and more! Every pixel is simulated. Every material interacts. Every experiment can become a catastrophe.

Fly the Lander, collect the fuel, avoid obstacles and perfect your skills to attempt a soft landing in this difficult precision platformer.

Manage your own anime shop 🎌. Play solo or team up with friends 🤝 in 4-player co-op mode to grow your business 📈 Stock shelves with manga, figures, and collectible cards in this immersive first-person game 🕹️.

From gliders and helicopters to wide-body jets, fly highly detailed and accurate aircraft in the Microsoft Flight Simulator 40th Anniversary Edition. The world is at your fingertips.

A peaceful open world of forests, rivers and wide meadows. Set out alone or with up to 4 friends to find the place you’ll call home. Build a quiet life or grow your settlement into a thriving new civilization. The choice is yours.

The protagonist, the demon hunter, awakens the special power of a hunter to stand against the human and elf allied forces attacking his demons, inheriting the bow of the previous demon hunter and confronting the enemy.