Top similar games like Alpha One:

Galactic Civilizations is a space based strategy game in which you are in control of humanity's destiny.

Sid Meier’s Civilization: Beyond Earth is a new science-fiction-themed entry into the award winning Civilization series. As part of an expedition sent to find a home beyond Earth, lead your people into a new frontier, explore and colonize an alien planet and create a new civilization in space.

This is a 4x turn-base strategy game. You can develop your planet, expand your territory by colonizing and building space stations, research technology to unlock more ships, and ultimately discover and eliminate your enemies.

A turn-based strategy game about managing the first human colony on the pumpkin planet.

You’re stuck out in the middle of space alone in ship, see how long you can survive with endless enemy ships and do all it again.

2D space shooter and turret defense come together to create the Planetary Defense System this world needs! Shoot down asteroids and aliens and survive the bosses in this arcade like game featuring customizable satellites, projectiles, and upgradable Cannon and Planet Shield systems.

Time and date are not important. Aliens have boarded a military vessel deep in space. Little do they know, #T217, a combat clone onboard the dreadnought, has been waiting for them. Use a wealth of weapons and mechanics to eliminate them with expert precision.

Beyond is a sci-fi turn-based strategy game set in a generated solar system that orbits a distant star every round. Play as one of five alien species as you race to collect resources, build your military, develop new tech, expand the area you control, and drive opposing factions from the system.

A Roguelike Tower Defense in space with missions to conquer. Can you hold against the spreading alien bosses? Build and upgrade towers against the corruption. Choose your technologies and warpspeed your way to victory.

Customize your Ships, Upgrade your fleet, and Command your way to victory in this ruthless rogue-lite tower defense/real time strategy hybrid. Take on an enemy that learns from your moves and adjusts its own path. Do you have what it takes to persevere?

Defeat enemies and get parts! Build your own spaceship!

"Explore 'Stellar Orphans, a captivating deck-building game where every choice determines the fate of your crew lost in the infinite space. Form alliances, manage resources, and resolve crises to guide your 'Stellar Orphans' to survival. Ready to defy the stars?"

From the creators of AI War: Fleet Command comes an all-new grand strategy title with turn-based tactical combat, set in a deep simulation of an entire solar system and its billions of inhabitants. You are the last of a murdered race, determined to unify or destroy the 8 others.

Fly around, mine resources, expand your ship, build weapons and fight off aliens!

Stellar Space is a new take on a classic arcade game with a modern, rogue-like, form for new players to enjoy!

Amazing graphics. Countless different units. An addictive Battle Pass. We have none of those things. Just one carrier and as many tiny fighters as you can muster to hold back hordes of enemy fighters and bombers. Victory is not enough - you may win the battle, but still lose the war!

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.

Star Realms is a hugely popular space combat deckbuilding game. Download and play today (note: base set is required to play online) to find out why Star Realms is the winner of SXSW 2014 Board Game of the Year, 7 Golden Geek Awards from BoardGameGeek, and 2 Dice Tower awards!

Shadow Empire is a deep turn-based 4X wargame with a unique blend of military focus, procedurally generated content and role-playing features.

Mow down the alien hordes, scout for resources and survive. Dreadnought is a mix of Action Tower Defense Survival and Shoot 'Em Up Bullet Hell where you control the ships turrets & defend against waves of enemies. Choose your weapons, upgrade your ship & brace yourself, the horde is coming.

Final Theory is a 4X-lite turn-based strategy game where you command fleets of battleships engaged in a galactic civil war. It presents an exciting experience for both veteran players and those new to the genre. It features innovative combat mechanics but also hearkens back to some of the classics.

A turn-based free-move strategy game. Walk/Run/Sprint freely without the grids. Your attack could be countered so choose your next move wisely.

Age of Wonders: Planetfall is the new strategy game from Triumph Studios, creators of the critically acclaimed Age of Wonders series, bringing all the exciting tactical turn-based combat and in-depth empire building of its predecessors to space in an all-new, sci-fi setting.

A sci-fi turn-based strategy game. A faithful digital rendition of the beloved board game, Empires of the Void II.

You are the last remaining commander. Grow your sector well and protect Earth from invading alien spaceships for 50 days. Build the best building combination on the hexagonal terrain.

Millions of players worldwide have flown, built, and fought their way through Captain Forever. CF Trilogy brings Captains Forever, Successor, and Impostor to Steam with a beautiful new renderer, new modules, and a reimagined world written by acclaimed novelist Cassandra Khaw.

NANOVOID is a 2D tactical space shooter that puts you in command of your own modular spaceship. Engage in intense, physics-driven battles, strategize with ship customization, and outsmart your enemies

Wage war on your friends and enemies in this simple and engaging strategy game. Easy to learn and quick to play, Mayhem Intergalactic is surprisingly strategic. Play against the computer, or duke it out with friends over the internet. The universe shall be yours!

Gaia Project is the digital adaptation of the boardgame Gaia Project created by Helge Ostertag and Jens Drögemüller and published by "Feuerland Verlag". It is a 1-4 player strategy game. It plays in the same universe as Terra Mystica and continues the adventure in the far future.

Super Forklift 3000 is an arcade space shooter with a twist: you drive a forklift that carries and shoots up to three boxes. Defeat enemies and bosses while managing your different box types. Be careful not to run out of ammo!

Blast aliens to pieces and start a rebellion in this fast paced pixel art top down shooter where sprinting kills.

Xentron Attack is a multi-directional shooter. The evil alien forces called Xentron have invaded your galaxy and spreading dangerous meteors and missiles in the space. Fight with smart enemies who calculates your movements. Turn your ship precisely and use the borderless space wisely.

Turn-based space battle tactical/strategic game

A top-down, 2d space-shooter that pits the user against swarms of alien ships from other dimensions. Destroy all enemies and portals as fast as possible. Battle increasingly tougher enemies through 40 Campaign levels and Endless Mode!