Top similar games like ZOA Protocol:

The new flames of war have ignited, and you will lead the mobile infantry regiment to defend the position. At that time, these damn Zergs will come from all directions, but I believe that under the leadership of your heroic lieutenant, you and your subordinates can definitely defeat these damn Zergs

Continuum - become a combat MECH pilot in a brutal environment of the galactic post-apocalypse. In order to survive you'd have to collect resources, search for lost technologies and improve your combat vehicle. Defeat powerful adversaries, survive and become stronger.

Prologue to Orange Cast, an atmospheric adventure in a large-scale setting where Soviet and Western science fiction are combined itself. As a humanity’s elite space trooper, you take on a heroic, action-packed adventure throughout the galaxy.

2040 World is a free-to-play third-person MMO action game with extraction-based gameplay. You play as a mercenary operator, remotely controlling synthetic avatars used by powerful transnational corporations to explore a vast artificial megastructure simply known as The Station.

Freeman: The Resistance - is a single-player sci-fi adventure that seamlessly blends spaceship combat and planetary exploration. Unravel the mysteries of a richly crafted open world. Engage in thrilling battles, gather valuable loot and RPG elements to enhance your journey.

Uncover the truth in a city consumed by mutation as you fight, survive, and adapt in this action-driven survival shooter. Play as Levi, a special ops soldier sent into the chaos, where every battle brings you closer to the secrets buried within.

RPG shooting science fiction game, searching maze, collecting objects, go through the human organs.

Embark with your friends to explore abandoned moons in search of resources and valuable loot in a cooperative first-person horror experience. Level up and assemble a complete arsenal of tools, gadgets, and helper robots to accomplish the mission.

In the 798th parallel universe, there exists a gaseous planet, code-named "Gas Giant Voyage", which is entirely gaseous without any land. It is composed of various elemental gases, including metal elements and dust floating in the air left by meteorites tearing through the atmosphere.

A solar-powered robot awakens in an abandoned data center. — In this short 3D platformer, your movement, health, and ammo all use precious solar energy. Plan your actions carefully to seek freedom, as every step may be your last.

Broken Betrayal aims to evolve the multiplayer open world survival game with unprecedented levels of character customization, Open worlds to explore, where knowledge and skills are the ultimate weapons for long-term open world survival.

Play as a cute anime girl and fight across space in this action-packed third-person shooter! Switch between ground combat, mecha battles, and spaceship dogfights. Customise and upgrade your character, mecha, and spaceship as you take on missions, destroy enemies, and explore the galaxy!

The Cube is an MMO RPG shooter. A giant, levitating Cube with rotating rows and edges. Hidden within is an unknown equation capable of altering the laws of reality. Can you survive another turn?

From Bethesda Game Studios, the award-winning creators of Starfield and The Elder Scrolls V: Skyrim, comes Fallout 4. A landmark in open-world RPG design and winner of over 200 ‘Best Of’ honors, including the DICE and BAFTA Game of the Year.

A tactical stealth-action game where light and shadow are your greatest weapons. Infiltrate hostile facilities, outsmart adaptive AI, build defensive positions, and craft your loadout in a dynamic open world that shifts between day and night.

S.O.T.A - Survival Online Time Anomaly is a multiplayer MMO TPS game with RPG and open world survival elements. The game takes place in an anomalous zone. The setting of the game is the Soviet local post-apocalypse.

Revival is a third-person sci-fi action-adventure where you explore a massive hub world, hunt colossal bosses, solve environmental puzzles, and salvage alien technology to repair your ship and escape a hostile planet.

Take on the role of Nora Harwood, member of Everreach’s Security Division, on a mission to secure the colonization process of Eden and investigate mysterious incidents! Everreach: Project Eden is a fast-paced, story-driven action-RPG set on the visually stunning Planet Eden.

After crashing into an Alien planet called Yolk, You find yourself oblivious and left alone with your AI companion , Find your way through the unknown ,Discover the mysteries of Yolk and find out what happened to you and everyone else.

Maroon Berets: 2030 is FPS, TPS, Action-RPG; which simulates the units of special forces in the war.

Join your faction, and fight for survival in this exciting third person shooter.

Command your ship, harvest precious resources, and upgrade your arsenal in a relentless sci-fi universe. Aethelgard: Galactic Guardian is an action-packed space shooter where you must build the ultimate vessel to survive epic battles against elite alien fleets.

Skylorn: Bound Together is a co-op open-world action RPG. You arrived from a distant colony and explore a post-apocalyptic sci-fi fantasy world, battle enemies, uncover mysteries—alone or with up to two friends. Expect roughly 5 action filled hours for a single playthrough.

Jensen, the sole survivor of the Nexentia shuttle crash on the planet CECLON. Alone, light years away from all human life! You will have to face the Nocturnes, primitive creatures in order to bring back the Veka energy, humanity's only hope.

Feral Echoes is an exciting survival adventure where every step counts. The game combines elements of survival, exploration, magic, and combat. Explore wild lands, build shelters, fight monsters, solve puzzles, and create your unique story.

The Atomic Heart sequel brings you back to the retrofuturistic universe, full of new characters and dangers. The game immerses you in events on a global scale and raises the bar for what an open-world action RPG can do.