Top similar games like Spectrum Forces:

Astral Bounty is a brutally hard 2D arcade sidescroll shooter straight out of the 90s. Shoot your way through hand-built formations, earn credits as you go, and spend them on upgrades, checkpoints, and revives. One difficulty setting, four ships, no mercy.

CORA (Counter Offensive Rapidfire Automata) is a singleplayer/multiplayer top-down shooter created by Empty House Games borrowing inspiration from other arcade top-down shooters.

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!

An Alien Threat Has Emerged in the City of Cynosure! Run and gun through a series of mazes to defeat the monsters.

Run and Gun Roguelite where the goal is to upgrade each consecutive alien drone on death so the next can strive to become overpowered enough to escape the all consuming hive mind.

Can "Super Meteor" save the universe from the space debris created by the development of space by the people of Earth?

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

Myrne 6313 is a mix between the extraction shooter genre and corporate life. Survive an hostile office space where each step can be your last. Help HR find their stapler, get chased by security dogs, clear your inbox, fight cultists in the parking lot, learn magic… And more!

Fight tons of robots, upgrade your abilities and explore an abandoned artificial planet with your jetpack in this non-linear shoot'em up adventure! Play as Gabriela Xanchez, a galactic government agent sent to investigate a dying world and find the last paper book in the galaxy.

Zone of Lacryma is a story driven vertical shmup with 11 levels, highscores, speedrunning, upgrades and more.

Star Child is an explosive new action-adventure set on a sinister alien planet. Fight numerous aliens and formidable bosses, wield powerful explosives and destructive laser weapons, find secrets and unlock new abilities as you progress. Can you survive your dangerous mission?

The critically acclaimed update to the Space Invaders franchise has arrived to invade Steam with greatly improved graphics and audio! Packed with pulsing, vibrant visuals enhanced further by interactive sound. The invaders have evolved, the question is: can you keep up?

Bydo Missions in Your Pocket — Beyond Dimensions, the Melody of Two “R”s.

Building on the legacy of R-Type Dimensions and R-Type Dimensions EX, Dimensions III has been completely re-envisioned with cutting-edge visuals and sounds, expanded gameplay modes, and a range of new features designed to deliver the most definitive modern edition of R-Type’s classic era. 

Pewt 'em Up! is a retro inspired arcade space shoot 'em up with lots of upgrades, achievements, extras and more.

Plutobell is in trouble! Help Rei-Bo in this action-platformer full of challenges and traps, filled with of cute and silly characters. Choose the stage order, get new weapons as you defeat each boss and test all your skills in RoboGAL!

Run and reverse gravity in this simple but unique platformer, clearing experiments as a cell that dies in one hit. Navigate microscopic alien environments, dodge hazards, eat cookies, and fight robotic bosses.

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

Join Emme the dog as she battles block invaders in this puzzle action game. Defeat all kinds of unpredictable blocks across hundreds of levels.

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.

The Monster Queen has invaded town and captured your friends! Pick your stage, explore, fight monsters, save your friends, and play as them in this top-down shooter inspired by classic handheld gaming!

A SUPER REALISTIC (ahem..) alien sniper simulator! Use your super quick reaction skills to outwit the alien blighters and snipe your way to victory!

2D pixel art platform game in which you are in charge of eliminating alien enemies that try to conquer your planet.

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

Shoot through storms of weird and funny creatures, jump between planets by switching gravity, and relive the childhood fun of your very first arcade shooters - alone or with a friend in co-op!

Join Captain Rijk as he attempts to escape from the clutches of one of the most villainous species in the galaxy. Help to uncover the horrors that are being carried out on the fringes of the civilised galaxy and become the divine being prophesised to inspire an uprising and destroy The Domain.

Code Arcturus is a retro inspired arcade-style action platformer, with aliens, robots, spikes, explosions, and lots of coins. Blast your way through levels, compete for the fastest times on the leaderboards in Speedrun mode, or put your skills to the ultimate test in Nerfed mode

A high-speed action shooter that allows you to move at high speed and aim at the floor, wall, and ceiling. Combine various items to create your own build.

Blast your way through waves of space debris in order to reach what is waiting for you on the other side. Find your fighting style with multiple unlockable ships in this fast paced space adventure!

A futuristic action rail-shooter! Action packed, and full of quirky character dialogues, unique level designs, fully animated story cutscenes, and challenging boss battles!

A spectacular, satisfying, and super-watchable defense battle! The ultimate 8-bit shoot 'em ups born in the 21st century, ""Changeable Guardian ESTIQUE"", is now on Steam!

"The last earthman" is a low angle shooting game. This game is simple to operate and full of pleasure! The game tells the story of the last earthman fighting evil aliens, saving the earth and continuing human civilization.

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!!

Cross the universe, shoot aliens, upgrade your weapons and face powerful bosses with AB in this retro inspired lateral shoot 'em up to save the world. Adventure into Campaign Mode or face the never-ending waves of Endless Mode with suitable challenges for all skill levels.