Top similar games like Rebel space admiral:

Space Colonizers is a simulation and strategy idle game of Sci-Fi adventure theme. To explore more planets and meet cute aliens, you have to constantly install parts and upgrade spacecraft.

You’ve just bought yourself a new island and it’s time to fill it up with QUESTS! Collect guildians, upgrade their guildhalls, and unleash them onto your own custom quest lines.

Adam has crash-landed on an alien world with Eve, a human restoration device. Rebuild civilization from a single human, develop cities, and combine technology with cultures unlocked through alien diplomacy to fuel explosive population growth in this sci-fi incremental simulation.

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.

Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters.

Build an industrial base among the stars. Gather resources, manufacture ships, research technologies, and explore unknown regions of space. The core gameplay can be played offline, while alliance features add online missions and cooperative construction.

An idle space 4X drawn entirely in Minitel-era text. Your empire builds, scans and colonizes while the game is closed — but the Hegemony raids on ninety seconds' warning, and something at the centre of the galaxy has started listening.

Order: The New Dawn is a colony sim with space adventure. As a legendary captain from the United Stellar, build a base on the desert planet New Terra and face the perils of the Wastespace—how will you shape the destiny of the stars?

Build stations above picky planets, match modules to what the locals actually want, and grow a trade empire that earns while you're away. Court the factions or cross them on the road from your first rattling fusion can to a megastructure that tames a black hole.

Build and expand an orbital station in this idle/incremental space colony sim. Manage crew, resources, refinery chains, research and ship expeditions as you progress from Earth orbit toward new planets.

Trade, fight and explore. Build a fleet, level your captain and dive through wormholes for rare loot — a single-player 2D space RPG of free corsairs.

Galactic Simulator 3 is a space exploration and evolution sim inspired by the Fermi Paradox and Great Filter theory. Scan uncharted star systems, gather resources and samples, establish outposts and stargates, and witness the rise and fall of civilizations across an ever-evolving galaxy.

Grow your realm, build alliances, and explore one of the deepest idle RPGs ever!

Spaceship Idle is an idle/incremental 4X grand strategy auto battler where you build your own spaceship and engage in space battles. Research a vast tech tree, equip unique weapons, unlock powerful upgrades, construct bigger and better ships, win epic (auto) battles, and conquer the galaxy!

Lords of Kingdoms is a multiplayer online war game. Turn your small castle into a mighty fortress and become ruler of the greatest realm.

An idle time loop planner aboard a dying station. Queue every move, hit go, then watch your astronaut run the route. Chronite is your only resource, and when it runs out the loop resets. Repetition is the progression: every action gets cheaper on ground you have already walked.

You must evolve it! Incremental is an incremental game in which you collect resources, build structures and buy upgrades. Help a robot evolve a mysterious creature and discover the truth about the past.

Andromeda is a hybrid between a Space 4X and an MMO. An online universe sandbox with 2 galaxies full of planets to colonize. Build structures like Mines to generate resources to build ships and engage in fleet battles with NPCs and other players, or just sit and chat with the friendly community.

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.

2d space combat like no other. From the perspective of a single crew member, explore the fully destructible interior of any ship in a massive living world. Engage in space combat with no hitpoints where you know your enemy is dead when you see them fall out of their ship into the cold dark of space.

ENDLESS Space™ is a turn-based 4X strategy game, covering the space colonization age in the ENDLESS Universe™, where you can control every aspect of your civilization as you strive for galactic domination.

Starcom: Unknown Space is an action RPG of space exploration and adventure. Build your own starship while discovering an epic story in a universe of strange mysteries, alien factions and uncharted worlds.

Run a post-collapse megacity where every decree has a cost. Balance industry, survival, politics, war, ecology, and human lives in idle-strategy simulation. Play in real time or one turn at a time. Idle/strategy/sandbox/dystopian/city builder.

An idle incremental adventure in space! Mine asteroids while fighting off enemy AI drones. Build your own AI drones, mining lasers, helper drones and more. Collect hundreds of rewards and unlock a variety of features that will help your ultimate goal: making numbers go up (or sometimes down).

Based off the original Merchant RPG, a new Idle RPG space exploration experience!

A sci-fi exploration game written in 1994, updated to use a modern 3D engine, and remains faithful to the original. The story is fully intact with only minor tweaks to gameplay and cosmetics. The original game is often compared to Star Control and Starflight.

In Dyson Era Idle, harness stellar power to build cosmic megastructures. Research technologies, select unique stars, and construct increasingly efficient Dyson Spheres. Transform theoretical astrophysics into a captivating idle experience of galactic engineering.

Build amongst the stars in Starport Delta, a light sci-fi strategy game that focuses on survival. Station Commanders across the universe will turn to you for guidance to expand, defend, and survive. Help them build a thriving station, but watch out, there are many dangers hiding in space...

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!

The ultimate space sandbox. Participate in epic fleet battles, form alliances, strive to dominate entire galaxies and harness the universe’s resources for your industrious empire or the destruction of others. Customise your experience, the universe is yours!

Destroy endless waves of alien ships that have all but wiped out humanity in this long form, unfolding, sci-fi idle game. Customize your ship with different weapons and defenses to defeat specific enemy types and utilize a ton of different systems to increase your overall power.

StarShipdle is an indie game that runs on your monitor while you do other stuff. You’ll be overseeing a spaceship as it explores the universe, managing upgrades, tracking progress, and following the story.

Welcome to Trappist-1, 40.7 light-years from Earth. Fly your Ark, a colossal spaceship and mobile base. Explore the solar system and establish thriving colonies. Uncover the mysteries of Trappist in this story-driven colony builder.

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.

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.