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.

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.

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.

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.

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!

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.

Deep Claims is a space exploration game where you upgrade your ship and equipment in order to mine increasingly valuable and hazardous asteroids.

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?

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 star system open-world with no story missions.

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.

Typing Stars is a fun, straightforward game that helps you master typing speed and accuracy. Race against the clock, beat your friend's best scores and become the typing star! 

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.

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.

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

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

Build a battleship and fight through unforgiving space to save your people. Make strategic decisions, guide your people, meet allies and foes, and battle for your right for a home. The tale of a lone spaceship on a centuries-long mission from Voidship: The Long Journey greatly enhanced and updated!

3030 Deathwar is a unique mix of Adventure and Space Sim. Explore star systems, mine and hunt pirates in top-down mode. Leave your ship and switch into classic Adventuring mode, where you explore derelicts, talk to shady characters or head over to the space bar for a drink.

Welcome to our sci-fi space adventure, where players take on the roles of a crew aboard a spaceship as they work together to survive in the vast and dangerous universe.

Port Aphelion is a trading-simulation and adventure game where players build their economic empire through honest trade, smuggling, bounty-hunting, or all-out piracy!

Time itself is breaking up, and Dodger, the dishwashing dude onboard Penrose Space Station, is the unlikely fixer. Join the chaos in this 80s-style comedy, sci-fi text-parser adventure as Dodger tackles a cosmic crisis like no other! This version includes all three episodes + new extra content!

Planets, aliens, resources, upgrades, caves, mapping & documenting star systems ... seek a new home for the human race. An all-inclusive (admittedly janky) procedural space-sim made by solo developer Schmidt Workshops.

Space Travellers is a unique open-world sandbox space simulator set in the year 2343. Travel the galaxy, trade, explore unexplored worlds, fight, build bases and factories, forge alliances and experience new adventures!

CyberHive is a strategic space travel simulator with a non-linear story, in the cosmic opera setting, and in an anime visual style.

Explore space in a hand crafted, physics based universe, with immersive sound and atmosphere. Fight and board ships, collect rare cargo, and upgrade your ship.

Calling Home is an exciting sci-fi simulation resource management game that draws heavily from games in the factory-building and exploration genres, providing a thrilling mix of building your base, researching, factory management, puzzle solving, exploration, and resource gathering.