Top similar games like Katalyst:

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.

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.

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.

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.

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!

"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!

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!

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).

Blast through waves of alien enemies in Project AionIX! Master your piloting skills, dodge, and survive in this fast-paced space shooter!

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.

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!

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.

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.

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!

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

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...

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 Soldier 3D is a fast-paced run-and-gun shooter where you battle a rogue army across explosive 2.5D levels. Use a wide arsenal, pilot tanks and mechas, and face off against traps, bosses, and even dinosaurs in classic arcade-style action.

classical horizontal scroll 2D Shmup

Repel extraterrestrial entities!

Super Real Darwin is a fast-paced, vertical scrolling shoot-em-up that rewards skill and persistence – a cult classic for the retro shmup fan. Take control of a fighter ship capable of mutating into different shapes as it evolves while fighting off enemy invaders.

A 2D side-scrolling shooter in which you advance by defeating enemies in a world where everything is made of voxels. Defeat enemies, collect reinforcement items, and take on powerful enemies that appear one after another!

Defend Terra against the onslaught of hostile invaders in this 2D top-down space shooter. Upgrade and empower your ship's different systems to stand a chance against the growing threat. If you fall, Terra falls, and the rest of the galaxy will soon follow.

ZPF is a retro-inspired horizontal shooter originally designed for the Sega Genesis/Mega Drive. Blast your way through a cosmic gauntlet of epic boss battles, addictive scoring, and hidden secrets in a thrilling arcade-style adventure through fantasy, sci-fi, and alien-themed worlds.

Equipped with the Fusion × Transformation “PELL” System! Free Map Side-Scrolling Shooter