Top similar games like GEM:

At the heart of a sci‑fi world awaits a series of logic puzzles that reward prudence, perseverance, and ingenuity. Skills you hone here prove useful in everyday life. No violence — just thrilling, high‑stakes challenges. Curious how it works? Play!

TRAXION is a space-themed cave flyer featuring beautiful pixel art, great music, and tons of meticulously crafted physics puzzles.

2D-isometric game with a lot of action and sci-fi narrative. Play with and switch between three characters: Kit - the girl, Che - the ape and Moses - the alien, as they explode as many droids as possible!

AsTroops is a roguelike card-based space combat game. Build your fleet, choose cards with machine gun, rocket, and electric weapons, and fight real-time battles to break the alien blockade.

A fast-paced 2D action adventure set in the mysterious world of Drury. Run, jump, and soar through procedurally generated levels as you chase, or are chased by your own shadow. Collect coins, grow your collection, and race to the top of the leaderboard!

Survive 10 enemy stages! Shoot 'Em Up style, spaceship game, in pixel art and 8-bit retro music! Evolve your shot to the maximum level, use the energy bar for upgrades, and special abilities! Advance each stage by defeating Bosses and enemies to collect new skills, transformations and extra lives!

While your ship battles enemies on autopilot, your mission is to keep upgrading it with strategic cards. In this experience that values brains over reflexes, the right upgrades are the key to victory!

With limited fuel and several dangers lurking, use your skills to rescue astronauts trapped in various unique places on the strange planet. It won't be an easy rescue.

Liberty Fighters is a fast-paced top-down extraction shooter with mixed RPG elements. Explore the vast open world space, loot gear or materials and sell it for the best price. Upgrade ships or buy new ones to fight in action tense space combat missions.

DICED Pilot is a 2D action game containing old-school platform-based movement/jump timing challenges, physics-based surroundings, jetpacks, and weapons that can destroy everything in sight! Now with a multitude of cheat options and a full-blown level-editor! (currently in beta)

The original 8-bit twin-stick space shooter about brotherly love, available to play for free.

Defender's Squad is a sci-fi vertical scrolling shooter 2D that combines 7 different levels. Play Solo and pick one of the 3 ships to kill enemies and save the earth from aliens.

Hoboman is a 2D NES-style platformer with a unique Sci-fi story and wild characters. Play as Pluto the Voltran as you hop ships from planet to planet and collect geodes to get your life back!

The Happies: Amber Falcon is a small casual game, where you control a hot air balloon and explore different mission environments. In a disaster of cosmic proportions, the Happies are forced to leave their planet in a hurry on evacuation ships. One of these ships is the Amber Falcon.

Explore space and race against the clock in this retro styled adventure game.

Space Survival is the next great SIMPLE 2D casual space action shooter where you have to defend against wave of enemies, have fast reflexes and strong will to win. It is great way to relax, but also a great challenge. How long can you stay focused?

The alien lifeforms welcome you to The Extraterrestrial Museum of Earth Exploration! Get lost in the exhibits, meet new friends and take up a job at the museum to help these aliens learn about Earth from a real-life Earthling!

Play as "Sauce," the Grey Alien, on a critical mission to hide alien evidence from humanity. Abduct, rescue, mine, and unravel Earth's mysteries. Battle formidable foes and prove your skills on the intergalactic leaderboard. Prevent disclosure, or the truth is out!

Help explorer Larry on an adventure full of challenges and dangerous creatures. - 1 Player - A giant map to navigate - 4 different levels to explore - A 16-bit style adventure - Map Editor. Export, Import and share maps.

STEEB is a sci-fi exploration adventure game. You are a bio-robot scout, sent to explore dangerous Earth-like planets. Gain unique abilities by extracting samples from alien organisms. Choose upgrades to progress and survive the planet's threats. Will your discoveries save humanity?

Pew Pew Pew, KaBOOM! is a challenging old school arcade game filled with action! Unlock new costumes and enjoy the awesome Chiptune OST as you reach new highscores!

Syder Reloaded revives the Syder series in this love-letter to 90s Amiga shmups with upgraded graphics and refined gameplay. Challenging levels, a fleet of ships and a motherload of alien invaders. Get back to your roots and curse at your monitor in this skills-first shooter.

Galactic Explorers is a top-down 2D retro space shooter inspired by early games such as Galaxian, and Asteroids.

Distant Space 2 - is an indirect continuation of the first part, in which you will find more dynamic gameplay. Your task is to destroy enemy ships on each level to go to the next of 26 available. In addition to conventional ships, you will have to wait for the boss ships, the battle with which will not be easy.

Arcade Mayhem Juanito is a retro experience about arcade-hopping. Teleport into different video games, play with unique mechanics inspired by well-known arcade games, face stunningly animated bosses and join the fight against the clonocell invasion.

An infectious retro hardware classic from 2006 has been revived. Only you can save the world from the deadly virus known as Scurge.

A wormhole has opened up letting aliens terrorize your city. Pilot your spacecraft and destroy the aliens using flamethrowers, missiles, gatling guns, shockwaves, and more!

Alpha Force Zero is an intense top-down bullet-hell adventure that requires skill and planning. Utilize multiple weapon systems including an Auto-Turret with adjustable firing modes and unlock upgrades that you can equip in your ship to give you the upper hand. Dodge, fight, survive!

Deliver packages... in space! Test your agility by navigating through different galaxies carrying diverse packages and upgrade your ship. Will you become the best courier in the universe?

X-Force Under Attack brings back all the charm of shmup games from the 80's/90's. It's a frenetic and chaotic space shooter with insane battles against extremely difficult bosses.

Battle through color soaked and mayhem paced arcade shooting action! Defend the Planetary Defense Shield (PDS) from the invading alien onslaught. Choose between charging the PDS and buying power ups to stay alive. You are the galaxy's final hope. Recharge, shoot, win! Will you save the galaxy?

Space fight arena is a retro arcade based arena shooter game that was modeled after legendary arcade games. This game retains the fun, addicting aspects of those arcade games while also adding on new, awesome features such as challenges, skins, and a world wide leaderboard.

An indie story-driven space shooter with intense battles, escalating enemy waves, and massive boss fights. Choose and upgrade ships, unlock powerful weapons, and protect your allies. Upgrade your base and construct a battleship to take on even stronger enemies. All set to a rock & synth soundtrack.

The Japanese just love their famous German-inspired Baumkuchen cakes, and hungry invaders from across the universe have discovered these delicious treats too! Are you up to the challenge of protecting the precious desserts from waves of alien attacks? Save the cakes!!

Feel good traversal sci-fi explorative side scrolling ability upgrade shooter with no map system, large areas and action puzzle bosses.

A simple jumping action game using only one button!