Top similar games like Onslaught: Armoured Assault:
Onslaught: Armoured Assault $2.99
Survive the endless onslaught of space, as you create your fleet to take down aliens, pirates and the unknown.
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Dee-6: Dice Defenders$4.99
Dee-6: Dice Defenders is a game about survival in space travel, about the fight against internal and external threats, about the distribution of the power of the dice-team and, of course, about luck!

Stellar Warfare$19.99
Space RTS with base building and ship customization. Personal passion project. More than 200 available ships, weapons and modules to design your fleet with. Contains a small campaign, several single and multiplayer game modes and a coop game mode. Also contains Wave defense!

IDUN - Frontline Survival$14.99
A defense RTS where you can move turrets at will. Extract resources, upgrade technology, and defend against enemy swarms in a gripping space campaign. Hold the line, set up your turrets, and brace for screen-filling hordes!

Guild Commander$9.99
In Guild Commander you manage your guild to victory! Deploy your guild members and save your world from the Necro Lord!

Royal Wars: Farm TDFREE
Royal Wars: Farm TD is a free-to-play tower defense game where strategy meets luck. Place randomly selected towers, merge them to unlock higher tiers, and defend your kingdom through multiple levels. Plant crystals, manage resources, and prepare for epic battles.

Idle Towers$9.99
An idle survival game with tower defense mechanics. Build your own perfect defese and face infinite waves of enemies!

Fight after Dark$2.99
Building! Auto-battler combat! Roguelike! Be stronger during the day and resist the enemy during the night.

Chaos Galaxy 2$19.99
A turn-based Galaxy totalwar game. Choose one of 12 factions, direct dozens of admirals, control hundreds of warships, mecha and monsters, set up various buildings, study technology, and lead fleets to carry out grand strategic actions on the map of the galaxy.

Captain of Industry$29.99
Land your crew of survivors on an abandoned island and survive! Mine raw materials, grow food, build factories, manufacture products, research new tech, and trade with others. Become an industrial superpower! But this is no easy task, you will be put to the test to keep your settlement alive.

ExocraftFREE
Design unique spaceships and build the ultimate space mining fleet as you team up to battle for resources and glory in this massively multiplayer action strategy set in an alien wasteland.

AI War 2$19.99
The most devious and acclaimed artificial intelligence in strategy gaming is better than ever. A grand strategy/RTS hybrid that reverses many conventions of both genres. Take territory without attracting attention, build your empire with care, and adapt to an ever-evolving galactic battleground.

Battleships and Carriers 2: 1940-1945$15.99
Casual WW2 naval turn-based strategy: attack/defend, search & destroy, build ships, subs and aircraft. Clear & simple combat and move. Fast, re-playable board game style strategy, with 70 unit types. More than 40 missions, death-matches & campaigns (Destroy, Conquer, Defend, Escort, Kill-Them-All).

Gemini Wars$9.99
Take control of a fleet commander returned from exile, rise through the ranks of the United Space Federation forces and join an epic war across the stars.

Industries of Titan$29.99
Create a sprawling industrial city. Compete with other rival corporations on Titan for resources, territory, and power. Seek victory via technology, influence, warfare, or the wealth extracted from your citizens. Stake your claim to the Industries of Titan in this innovative sim/strategy game!

ShipOS 1994$12.99
Are you ready to recover your family's fortune and rebuild the greatest shipping empire the world has ever known? Well if you are, then you're going to need the latest integrated shipping management system to get you there. Welcome, to ShipOS 1994

Combat Air Patrol 2: Military Flight Simulator$29.99
Feel the power of flying the AV8B Harrier II. A middle ground flight and naval combat simulator with mission planner & fully dynamic open ended campaign. Showstopping VR.

Space Engineers 2$29.99
The ultimate space sandbox, reimagined. Unleash your creativity with powerful building tools, explore the mysterious Almagest system, and uncover its captivating story. Join the Early Access and shape the future of space engineering!

NavalArt$14.99
Design your own warships, equip them with a variety of armament, and bring them out to the ocean!

Zero-Point$10.99
Zero-Point is a 3D space roguelike featuring tactical ship-to-ship combat, crew command and an immersive view of your ship's interior. As Captain of a Star Federation cruiser, lead your crew and ship to victory over the rebellious Galactic Liberation Front!

Pixel StarshipsFREE
Pixel Starships is an FTL-style online sci-fi strategy builder and management game with a competitive PVP tournament. Set in the retro galaxy, your role is to explore space, meet aliens, and develop your ship, crew and AI. The game contains deep strategic and 4x elements. PSS is community-driven.

Rank: Warmaster$24.99
Stranded on Mars with next to nothing, build a city, assemble a fleet, and expand your empire to survive a hostile solar system in this new take that combines elements of space combat and RTS inspired by the classics.

Star Traders: 4X Empires$9.99
Take command of humanity’s last survivors and rebuild an empire in the stars. In this immersive turn-based strategy game, you will have to fight to protect your people, control rival factions, and unlock lost technology.

Sins of a Solar Empire®: Rebellion$19.99
Command a space-faring empire in Sins of a Solar Empire: Rebellion, the new stand-alone expansion that combines 4X depth with real-time strategy gameplay.

Creeper World IXE$19.99
The unstoppable alien force known as The Creeper has returned, devouring thousands of worlds in its path, and yours is next. Battle against the Creeper fluid in a groundbreaking pixel-level simulation to prove that humanity will rule the galaxy forever!

Spacecraft Tactics$8.99
Spacecraft Tactics is a 2D turn-based tactical space game. Save the last rebel outpost in the campaign. Develop a strategy, execute it in tactical battles and micromanage your ship. Play various game modes single or multiplayer. Create your own ships, scenes or mods and share them.

From the Depths$24.99
Over 1000 unique components allow you to build and command voxel vehicles from the deep ocean to outer space! Forge strategies, allegiances and fleets strong enough to destroy eight deadly factions of the planet and reign supreme. A genre-defying mashup of simulation, building, RTS and RPG.

Cosmonautica$9.99
Cosmonautica is a fresh take on space trading in a procedurally generated universe, paired with quirky humor for your intergalactic enjoyment.

Galactic Empire$15.99
Galactic Empire is a 2D turn-based strategy game where you, as the Commander, decide the fate of the entire universe. Expand your planet, explore solar systems, play cards in cantinas, modify your ships and conquer more planets.

EOPN – Test RS$24.99
'EOPN – Test RS' is a true test from the French Air & Space Force, turned into a sci-fi turn-based strategy game set in a nebulous future. Train for your selections or just enjoy the dive in this immersive experience where the goal is to take the best decisions to survive.

Astro LordsFREE
Player bases are located on asteroids, which travel within the Oort Cloud. Once they’ve acquired the appropriate skills, players can control their asteroid’s movements. Mass-combat enthusiasts will love the Arena: here, players can battle it out against alien races or other Astro Lord players.

Ark Defender$9.99
Roguelike missile command. Survive as long as you can aboard the Ark, humanity's last hope, in a hostile galaxy.

Halcyon 6: Starbase Commander (LIGHTSPEED EDITION)$14.99
A retro space strategy RPG with base building, deep tactical combat, crew management and emergent storytelling. Halcyon 6: Lightspeed Edition is a massively enhanced version of the Award Winning indie strategy RPG, Halcyon 6.

Cursed Crew$20.0
You’re the captain of a cursed ship in this crew management roguelite! Command your crew, keep the ship afloat, defeat pirates and deep-sea beasts, and sail as far as it takes to lift the curse.

Ports Of Call Deluxe 3D 2024$14.99
Ports of Call Deluxe 2024 in 3D Version of the The classic trade- and shippingsimulation. Create your own Shiptrading company and also lern how to navigate. Multiple Players and stereo. created by Rolf-Dieter Klein and Martin Ulrich starting with the classic Amiga Version.

Duskers$19.99
Pilot drones into derelict spaceships to find the means to survive and piece together how the universe became a giant graveyard.

Lord of Rigel$19.99
Lord of Rigel is a turn-based 4X space strategy game inspired by the classics. In a galaxy divided by two elder races, will you unite with other species or forge your own path? Navigate galactic politics and defeat threats using espionage, research, and military force. How will you shape the galaxy?

Interstellar Turtle Legend$0.99
The universe is at war, and you're just a bastard. What choice will you make: Survive through the cracks and survive, or be invincible and kill the Quartet? Can you still hold on to your heart?

Swirl W@tch$14.99
Swirl W@tch is a tense stealth-action roguelite that takes place on an over-exploited gas giant. Infiltrate industrial installations, evade or eliminate guard ships, commit corporate sabotage and grow the movement to unlock new gear. Can your actions free this otherworldly world?

Submarine War$0.99
Submarine War is a new action-packed submarine combat game that immerses players in the 3D action with unique game controls and 3D environments.

The Pegasus Expedition$19.99
The Pegasus Expedition is a story-driven sci-fi grand strategy game set in a key moment for humankind’s survival. Facing an overwhelming threat at home, humanity sends expeditions to the Pegasus Galaxy in a desperate attempt to find a refuge for the population of Earth.

Destination Ares$9.99
You're the AI of a rickety colony ship, bound for the red planet. You have limited resources, a desperate crew, and an unknown fate awaiting you. Can you survive the journey across the Big Black?

Solar Scion$9.99
Top-down sci-fi fantasy shooter with strategy, building and resource management. Colonize, build stations and recruit allies as you fly your ship through limbo!

Galactic Crew II$13.99
Galactic Crew II is a roguelike space exploration game inspired by FTL and the classic XCOM games. Explore a hostile galaxy with your valorous crew from its center to the outer reaches of space, clawing your way up from a nobody to a galactic pioneer through colonization, commerce, and combat.

Dato of SrivijayaFREE
Dato of Srivijaya is Historical RTS about rise of Srivijaya Empire in 7th century from unknown power in South Sumatra’s river to strong maritime power in Asia for almost 3.5 centuries! Explore Southeast Asia in 7th-10th century and build the strong empire!

Space Cube Tower Defense$199.99
You control a space station in the form of a cube that protects the planet from invaders.

Ship Graveyard Simulator: PrologueFREE
Visit the largest ship graveyard in the world. A dozen kilometers of beach filled with wrecks. Hundreds of ships wrecked on the coast. Thousands of tons of steel. Choose the most valuable ship for you and start the adventure. Play as one of the workers during the most dangerous work in the world!

Harbor Tycoon$4.99
Manage your own shipping company! Be a maritime business owner, with control over everything in your business. Work, earn, grow and become a shipping magnate!

Deep Space Outpost$12.99
Deep Space Outpost is a space station building & survival game, involving resource and base management. Build your space station tile by tile, mine asteroids, refine materials and keep your station operational.

Settlements Rising$18.99
Settlements Rising is a medieval city building and colony management game. It offers a lively colony experience with simulated villagers, dozens of professions and resources, natural disasters, and raids, while providing full control over the colony through trade, production chains and datas.

The Spatials: Galactology$12.99
The Spatials are back with Galactology! Design, build and protect your colony station from the many enemies you will make while exploring the galaxy and exploding their homeworlds.

Advancity$14.99
Run an empire in this simple and enjoyable city builder strategy management game. Build, research, train, battle, upgrade, expand, and sail, all while managing your citizens and resources. Advancity focuses on fun and progression.