Top similar games like Astra Protocol 2:

Don your space helmet and fire up your star drive as you blaze a trail across the stars in this 1980s inspired space exploration game.

Fly real astrodynamics from an Apollo-era DSKY. Plan Lambert transfers, mine asteroids, build a fleet, and survive a 38-body solar system where every trajectory is solved from Kepler's equation. No autopilot, no cheating.

The conquest of the Solar System has begun – prove yourself as a space colonist! Pilot the spaceship, choose the planet you wish to inhabit and build your new home. However, remember that there are no rules or laws in outer space. Don't underestimate the danger and stay vigilant – enemies are near!

No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe.

A hard sci-fi survival sim where each decision costs power. Every system drains your dying reactor. Pilot a crippled spacecraft across a real-scale solar system using true orbital mechanics, manage critical systems, and fight to reach Earth — where space itself is the only enemy you need.

Funorbit is a space survival simulation with realistic physics, resource gathering, crafting, and building. Navigate a vast universe using orbital mechanics, encounter drifting meteoroids, and construct space stations to survive.

Unknown Horizons is a retro styled top-down space exploration adventure where you will meet new alien races, learn their secrets and build their trust to get their help to find a way home.

The ultimate space capital ship combat compendium is the evolution of hard core space combat sims. The only game of its kind currently in existence.

Fly your space ship through a 2D sci-fi world. Fight real-time space battles, upgrade your vessel and trade rare resources. And if you get bored on the way, text with your AI assistant Hopper. She will know what to do.

Welcome to this innovative sci-fi open-world! As the last survivor of humanity, build a home on a wild alien planet. Reignite civilization—from primal survival to advanced energy systems. Use the Planetary Control Module to reshape the world, uncover human secrets, and journey back to Earth.

Worlds Of The Future is a sci-fi open world, action/adventure game. Explore a fully seamless solar system full of adventures, mysteries and colorful characters. Build your space delivery company, climb the company rankings and become a legend among the worlds!

Survive and explore space in Astrobound! Visit strange planets, encounter cosmic calamities, and keep your crew alive as you journey through the stars in a retro-inspired whimsical space adventure.

Detached is a suspenseful interstellar duel that demands tactics and skill to survive. Separated from your unit you must make smart decisions and race to safety in this visceral exploration of deep space. Strap yourself into your spacesuit for thrilling gameplay designed for VR headsets.

A single-developer passion project. A seamless full scale solar system. Thrilling action. Be part of an incredible journey as a Universe is built from the ground up!

Rebel Galaxy is a swashbuckling space adventure, with action-packed combat, exploration, discovery, trade, and “negotiation” with the outlandish denizens at the edge of the known universe.

An action packed strategic space adventure with trading and procedural generation. A space vagabond with a gambling problem must trade and fight off pirates to pay a debt before he is turned into space dust.

In the distant future, the X universe faces a period of profound and irrevocable change. While the universe stumbles towards an uncertain future, countless adventures await as new enemies rise in search of power.

Explore alien planets with carefully designed ecosystems, weather, resources, dangers and unique phenomena. Hunt animals for food and collect resources to craft equipment and repair devices on your ship. Escape each unique planet and unlock crew members and new ships.

Deep Claims is a space exploration game where you upgrade your ship and equipment in order to mine increasingly valuable and hazardous asteroids. Can you make it to the core?

Space Tourist is a chill, mechanic-lite, easy space exploration game designed for tired gamers who love to discover beautiful worlds without overwhelming systems or steep learning curves. Explore space. Land on new worlds. Plant flags. Take photos. Relax.

Far from Earth, mankind hasn't changed in the centuries since we've reached the stars. Across this wide-open galaxy, you'll find merchants, builders, and explorers. The more adventurous are colonizers, conquerors, and even space pirates. And you, Voyager? What will you be?

Step into the grease-stained boots of a debt-ridden Patcher in a gritty industrial space station. Diagnose critical failures, strip panels with your automatic vortex drill, and replace complex components to bring massive ships back to life. Restore power, clear the smoke, and pay off your debt.

Grab your jetpack and explore procedural asteroid fields, derelict spaceships and abandoned outposts. Build and automate your Space Rig to process scavenged trash. Craft, trade and fight your way home in this interstellar, open-world survival sandbox.

Haul cargo, hunt bounties, upgrade your ship and get paid in a gritty lo-fi universe. Hand painted graphics, procedural generated star systems that can be navigated, story campaign mode or huge open-world.

Pilot the last vessel of a fallen civilization into the vast expanse of space. Collect resources and search for a new world to call home in this minimalist space exploration and survival game.

Explore a collapsing multiverse, make first contact with 75 alien civilizations, and uncover the truth behind reality’s unraveling—one discovery at a time.

You are a Scraponaut, create your own spaceplane with unique parts each affecting the way your plane behaves. Collect scrap while exploring procedurally generated islands, unlock and discover unique new parts to upgrade your spaceplane.

You are a pilot, seeking revenge on your deceitful father who threw you into unknown space. Can you find your way back and get revenge? Experience a mix of 2D topdown space adventure and explore planets to discover quests, negotiate trades, mine, hunt and survive in an expanding universe.

A futuristic sci-fi persistent universe exploration game with one million stars and 18 million planets and moons. Fly your ship to any star and explore its solar system. Claiming stars, planets and moons will make them yours forever - other players will see your discoveries and you will see theirs.

An open-world space exploration game. Explore, trade and fight to rise the ranks, discover new worlds and new species, and leave your mark on the Galaxy.

Fly a rented ship in a procedurally-generated universe, navigate risky routes, and profit from changing markets before the opportunity disappears and you lose it all. Take jobs, navigate the markets, smuggle, lie. Do everything in order to keep flying.

Lead humanity's first deep survey beyond Sol in a research-first space strategy game. Explore star systems, investigate worlds, deploy probes, and turn scientific discoveries into strategic power.

Control Rovee and complete her mission. Using the terminal and clever pathing, ensure Rovee finishes her mission successfully. Be careful, or she'll run out of battery and her mission will come to an end.

Cratered is an open-world planet exploration game with a distinct illustrative style. Explore a star system, land on planets with your ship and walk around in first-person. Use tools to dig into the surface to find hidden items. Meteors, explosions and collisions make craters on the surface.

Validate credentials, provide travel, and catch baddies while maintaining your warp gate station on the dangerous fringe of the galaxy.

Explore the pixel cosmos, jumping from star system to star system. Land on fully procedural planets, and make them your home.