Top similar games like Katalyst:

A fast-paced retro arcade shooter inspired by classic 1980s side-scrolling space combat. Weave through organic obstacles, survive relentless enemy waves, and defeat powerful end-level bosses in a pure, skill-driven singleplayer experience.

SPACEMAN is a short, nostalgic, retro Shoot-Em-Up

Fight through two thrilling phases of an epic boss fight as the gunner of a repurposed air train, built to take on an alien entity known only as The Hand. Blast through 10 unique encounters with your trusty set of cannons, and rack up a high score to compete with your friends!

In this classic retro arcade-style space shooter, you'll embark on a thrilling adventure through the cosmos, battling against an onslaught of alien invaders and formidable bosses. With its pixel graphics and pulse-pounding soundtrack, Xappy Ship is a love letter to the classic space shooters.

Break the laws of physics, dash and shoot your way through levels full of hazards and machines gone rogue. In this retro game, you control Project Gravity Storm, an advanced machine able to control gravity itself; however, the mother computer will not make things easy for you.

Jetboy is a retro supercharged jetpacking pixel shooter with a pumping metal soundtrack.

Fast paced shoot em up played across 12 levels. Point your ship in any direction, deciding constantly between extra firepower (firing in any 2 directions) and movement. Or deploy the directional shield to block bullets from a single direction, point your ship and dodge simultaneously.

Classic multi-directional (360°) shoot 'em up. Navigate your UFO through hazardous environments with dangerous enemies and beat huge bosses!

Defend the Little Spaceman Dudes from aliens! Blast waves of Alien Abductors and UFOs across 50 challenging levels in this fast-paced ’80s-style arcade space shooter.

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.

Choose your spaceship and defeat the alien threat that comes from the Moon. Blast your way crushing, ripping apart and exploding hostile aliens that are taking control of powerful weapons and military technology from Earth. Find the entity that controls the threat and make it explode into blood.

A fast-paced roguelike space shooter where every credit counts. Fight through dangerous sectors, upgrade your ship mid-battle, and convert your earnings into permanent power. Because when you die, you keep what matters.

Magnetar is a top-down space shooter set in a unique physics-based environment packed with opportunities and hazards where you'll need all your skill to survive. Collect credits to upgrade ships and allies. Features 50 campaign levels and endless random levels.

Sagittarius is a classic side scrolling space shoot'em up in a modern take. In this epic space game it's up to you to save our solar system from destruction. Fly alone or with a friend in a local multiplayer co-op game.

Destroy waves of UFOs in a arcade style space shooter with an array of powerful weaponry.

Taito's 80's arcade hits hit back! Four milestones of the 80s arcade movement in one action-packed compilation!

Blast open asteroid fields, grab the loot, and fight off alien raiders in this fast-paced 3D first-person retro arcade shooter. 2 stages available now — Stage 3 dropping June 14, 2026.

Are you ready to command a range of different units as they battle aliens in a mission-based take on the classic Snake? Select your path to victory!

"Don't go to GALXAGAR"; a phrase uttered by many who have traversed its rim. Untold treasures, and terrors, await within its blackened depths. Ready your craft, spacefarer, because you're about to enter the most dangerous sector in all the stars. Get ready.. for GALXAGAR!

A shmup without shooting. Reflect the bullets with one of your two shields. Bite-sized arcade action. Cover humankind's retreat and make it count.

In this classic side-scrolling shoot-em-up, originally published in 1989 for the Atari Lynx handheld console, take on the role of a starship pilot trapped in a web of 51 interconnected hostile universes by the evil spider Zendocon.

Blast and weave your way through enemy fire while managing a wide variety of ship power-ups in this retro style horizontal shoot-'em-up!

A fast-paced, side-scrolling retro shooter where you play as “Blit" on a mission to rescue orb pods. Blast enemy swarms and face off against bosses in this bullet-hell shoot 'em up. Earn power-ups and get ready for fluid arcade action in a stylish world with an 80s synthwave soundtrack.

Sidescrolling Shoot’em’up that will transport you back into the 90s (and space).

Gravity Ace is a 2D twin-stick where you fight gravity in space caves. Descend into dark caverns, fly and blast your way past enemies, retrieve the reactor core and make your escape, all while fighting the deadly embrace of crushing gravity. Do you have what it takes, pilot?

Dive into a 2D action game where you control a spaceship, defeat enemies and overcome deadly traps. Extend your arsenal by collecting new weapons and technologies for your ship that you will need to conquer four different dungeon-like worlds, all connected by an open space full of surprises.

Royal Odyssey is a retro-style arcade space shooter where you pilot Prince Zayven’s ship through a deadly asteroid storm, blasting your way to survival.

In this side-scrolling insect shoot-em-up, originally released in 1990 for the Amiga, take on the role of a robotic fly, tasked with saving the world from hordes of mutant cybernetic killer insects. 50 platforming levels await, across 10 diverse worlds, plus bonus levels and more!

The Rush is a horizontally scrolling shoot 'em up with graphics inspired by classic space shooters of the MSX. Buckle up and see if you have what it takes to master the highly adaptive Chameleon Quartz space fighter and single-handedly obliterate the alien invaders!

Outnumbered and outgunned in deep space? No problem! Turn your enemies' attacks into pure bullet heaven with your shield tech and absorb projectiles to power up your ship and score big! But when your shield expires and it's danger time, you better switch up your strategy fast...

Frenetic 2D action in the style of Space Invaders! Customize your spaceship, face hordes of enemies, and challenge yourself in multiple modes, including Campaign, Arcade, Invasion, and Survival. Upgrade your ship, collect power-ups, and face unique challenges in every battle.

Destroy enemies, bosses and everything you see ahead!! Get crystals to buy better starships and get stronger. Have fun in three different game modes.

A flying saucer chases you all over the galaxy. Run away, defeat enemies, and evolve to avoid getting abducted

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

Metal Soldiers 3D is an action packed side scrolling run ‘n’ gun shooter where you battle a rogue army through explosive stages full of enemies, traps, and bosses. Use powerful weapons, pilot tanks and mechas, and upgrade your gear in classic arcade style action.

classical horizontal scroll 2D Shmup