Games like Deuterium Wars on Steam
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Wurm Online
A sandbox MMORPG that has pushed the boundaries on what it means to be open world and stood the test of time. Dig, mine, shape the world around you and make your lasting mark!
Professional Fishing
Are you falling asleep with a rod? Never again! Professional Fishing will never let you fall asleep! Play an amazing fishing simulator and feel like a real angler! Create your own fishing club and compete with others!
Splitgate
Splitgate is a free-to-play, fast-paced multiplayer shooter that features player-controlled portals. This sci-fi shooter takes the FPS genre to a new dimension with its portal mechanics, delivering high-flying, multi-dimensional combat.
Mega Hasan
32 levels of platforming awesomeness.
GrandChase
Grand Chase is a free side-scrolling online action RPG with anime inspired graphics. Enjoy exciting adventures in dungeons and PvP with unique characters.
![MadOut2 BigCityOnline [CLOSED]](https://shared.cloudflare.steamstatic.com/store_item_assets/steam/apps/586980/header.jpg)
MadOut2 BigCityOnline [CLOSED]
Open world game, with free roam game play, many cars, missions and - online mode!
STALCRAFT: X
STALCRAFT: X is the largest open-world online game in the Chernobyl Exclusion Zone. Explore the world full of mutants and anomalies alone or with friends — unforgettable emotions guaranteed.
Project Torque - Free 2 Play MMO Racing Game
Classic Free to Play MMO Racer from the late 2000s is coming back online with all your favourite game modes like Sim, Drift, Drag, CTF and Thunder Alley.
America's Army: Proving Grounds
America’s Army: Proving Grounds is the official game of the U.S. Army and part of the highly acclaimed America’s Army game series. This free military game focuses on small unit tactical maneuvers and puts you to the test in a wide variety of new America’s Army maps and AA fan favorites.
Drop In - VR F2P
Drop In - VR F2P is a Free to play Low poly social game space. In Early Access players will be able to hang out in a lobby, play mini games, Squad up for Apoc, Zombies or Sandbox. Missions are being actively developed. DLC will be added after the game comes out of early access.
Guns'n'Stories: Preface VR
Put on your VR device and grab a gun for one heck of a wild n' crazy story heading your way! Dive into your grandfather's memories, who once was an infamous bounty hunter! Relive his glory days full of adventures. Dark humor, steampunk and cowboys – this is the world of GUNS`N`STORIES.
Snake Force
Snake Force is an alternative top-down shooting game inspired by the classic game Snake. In this game, you’ll rescue your bros and fight along side with them. You and your bros will stand in a line, and shoot at the same point. Keep the shape of your squad, because bullets hurt whatever they hit.
Darwin Project
In Darwin Project, ten inmates must survive the elements, track each other, fight, craft tools, and use their social skills to be the last one standing. It's a unique take on battle royale with a Show Director to influence the match and Spectator Interactions to create a one-of-a-kind game show.
Blood of Steel
"Blood of Steel" is a fair competitive multiplayer online game. You will ride into a battlefield where thousands clash, employing unique four-directional slashing maneuvers and strategic formations to defeat your opponents, experiencing the charm of warfare in the age of cold weapons!
KurtzPel
"KurtzPel is an anime-styled, action battle game from a third-person perspective. Players can battle it out in both PvP and PvE mission-based battle modes with massive boss monsters. Players utilize Karmas (the method used to indicate weapon and class types) when charging into battle. Each character gets to use two types of Karmas.
Zombie Panic! Source
Dive into the zombie apocalypse with Zombie Panic! Source: a cooperative, survival-horror first-person-shooter. A fast-paced standalone modification.
Combat Master: Season 5
Join fast-paced action-packed combat. Play Combat Master -- AAA experience on any hardware. Best-in-class multiplayer gunfight. Next-level extreme performance. Lightning-speed loading time and a whole lot more.
Plains of Pain
Survive a brutal open world alone or with friends. Explore a procedural wasteland scorched by chaos. Build and defend your base, trade for what you need, complete deadly quests, and fight to claim faction outposts before someone else does.
Hellbound: Survival Mode
FULL GAME NOW AVAILABLE. GO GET IT! This is the Free Survival Mode for Hellbound: a '90s style First Person Shooter, made 30 years later… but just a glimpse of the full game, go check it out!
Rune Teller
Become a powerful Rune Teller traveling through the open world of the Runegea. Recruit great colleagues for a fun journey, craft through a variety of items, and solve the requests of the Runegea residents. At the end of a long journey, you will find the reason for your resurrection.
Star Conflict
Star Conflict is an action-packed, massively multiplayer space simulation game that puts players in the role of elite pilots engaging in a widespread interplanetary skirmish. The whole world for PVP and PVE!
DRAGON BALL GEKISHIN SQUADRA
DRAGON BALL GEKISHIN SQUADRA is Dragon Ball's first team-oriented free to play game.
Pirates Vikings & Knights II
Step into the ultimate three-way war for honor, glory, and gold! This beloved community-driven game brings together swashbuckling Pirates, battle-hardened Vikings, and chivalrous Knights in hilarious and intense class-based combat. Join the fun, embrace the chaos, and fight your way to victory!
Pixel Worlds: MMO Sandbox
Pixel Worlds is a free-to-play sandbox MMO where players build worlds, craft items, explore dungeons, farm resources, and trade in a player-driven economy, all within a shared online universe rebuilt as a fresh start for a fair and stable long-term experience.
RPG World - Action RPG Maker
RPG World – THE Action RPG Maker! Unleash your imagination with RPG World and create, share and play amazing 3D games with our growing community. Claim glory and treasure as you conquer magical worlds, alone or as a team. No coding required!
Halo Infinite
From one of gaming's most iconic sagas, Halo is bigger than ever. Featuring an expansive open-world campaign and a dynamic free to play multiplayer experience.
Battle Nations
Battle Nations is back! Build your empire and lead your armies to victory! Choose from traditional troops and vehicles or unleash exotic forces like mammoths, velociraptors, sandworms, and futuristic plasma units!
SAS: Zombie Assault 4
Purge the undead! Intense action-shooter with deep rpg elements, including upgradeable guns and armor, unique class skills, and class special abilities. Entire game can be played single player or as a 4-player online co-op game, including PvP events like Last Man Standing.
CRSED: Cuisine Royale
CRSED: Cuisine Royale – is a brutal MMO last-man-standing shooter with realistic weaponry, elements of lethal mystic forces and incredible superpowers!
Transmissions: Element 120
TE120 is a short single player experience set in the Half-Life Universe featuring a gravity defying weapon that allows you to jump buildings and sustain large falls. The story takes place at a mysterious date & location. Where are you? Why have you been sent?
Warplanes: WW2 Dogfight
Grab the control yoke of a warplane and jump into the battlefields of World War 2 in this thrilling combat flight action game. In each of the campaigns for USA, Great Britain, USSR, Germany and Japan you will assume the role of a pilot and squadron leader of an elite air force unit.
Florensia
Florensia is a Free-to-Play MMORPG and shows you its legendary worlds ashore and at sea with its 3D anime style. Mysterious islands, the great ocean, dungeons, picturesque pirates and dangerous monsters are waiting to be discovered.
America's Army 3
Download AA3 Today and Become a Member of the elite America's Army Team! America's Army fans and new players alike can now experience America's Army 3, the official U.S. Army game.
Ring Runner: Flight of the Sages
Ring Runner combines the fast-paced action of space combat with the rich story and skill variety of an RPG.Trek across the universe in a 30 hour long story-driven campaign based on a companion Sci Fi novel, or challenge 6 scenarios alone, cooperatively, or competitively through local or online multiplayer.
The Expendabros
The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.