Top similar games like Opollo:

Absorb matching enemy fire, unleash devastating burst attacks, and survive escalating waves of neon arcade chaos in this fast-paced reactive shooter.

Ragtag Fleet is a fast-paced pixel-destruction survival roguelite. Tear apart enemy ships, expose their Cores, and turn the spoils into weapons, drones, and modules. Build a makeshift fleet into overwhelming firepower.

Survive endless waves of escalating enemies in this fast-paced arcade shooter. Dodge overwhelming attacks, master precision movement, and fight to stay alive inside hypnotic neon chaos.

Heliocide is a relentless top-down scrolling action! Arm your shields, lasers, guns, bombs and missiles to defend the solar system from a massive invasion!

Gravity Waves is a twin stick shoot 'em up in space with waves of enemies and realistic gravity to provide constantly changing gameplay.

AREA WARS™ is a fast-paced 2D omnidirectional shooter where you battle enemies from every direction in a constantly changing enclosed area. Defeated enemies trigger chain explosions that engulf nearby foes and boost your score multiplier. Built for short, repeatable runs with score-focused gameplay.

A space station, infinite waves, and a screen full of vector geometry trying to kill you. Your turrets auto-fire. Your satellites orbit. This is bullet-hell-yeah. In-game and permanent upgrades. 17 upgrade types across 9 weapon classes. Play, upgrade, repeat.

Break twelve worlds, steal their cores, and fly them as your fleet. A single-run top-down arcade shooter: thirteen stolen fighters, twelve bosses with real weak points, a run that never pauses, and a leaderboard for every world.

You are the last pilot standing against an enemy fleet. Upgrade your starfighter, face epic bosses, and survive the chaos of space battles. Astro Flame: Starfighter is a fast-paced arcade shoot ‘em up in the spirit of the classics.

Retro-inspired arcade-style shooter. Save humanity from incoming waves of flaming hot meteors, alien ships hell-bent on destroying humanity, and the strangeness of space by shooting, blasting and nuking incoming waves of meteors and enemies.

STARSHRED is a fast-paced, top-down action roguelike set in space. Shred the invaders, choose between powerful upgrades to create unique combinations, and survive boss battles that turn into bullet hell. Grow stronger with every run and destroy the threat invading the planet.

stranded in space with nothing but a gun, hostiles start showing up out of nowhere... what now? you can't escape, but you can boot and shoot

Gratuitous Shooty Game is a hobby space shooter made by the developer of Gratuitous Space Battles, reusing the art from that game :D.

An explosive arcade arena shooter inspired by the golden age of Amiga classics. Blast through asteroid fields, destroy alien forces, upgrade your ship, and unleash devastating weapons in a modern reimagining of a timeless genre.

A roguelite space shooter based around the classic arcade game. Shoot asteroids, ships, and take down the mothership in a multi-stage boss fight, avoiding lasers and explosions. Upgrade your ship during and after your run in this casual simple roguelite.

Mashup of classic arcade games.

Akka Arrh is a modern take on a scrapped project from the 1980s, providing players with a fast-paced, addictive, arcade shooter experience and psychedelic visuals. Protect your life rings as you chain together combos and go for a high score!

Bullet Hell or Heaven? A rogue-like where you upgrade yourself and your enemies. Strategize around your build choices and dominate the battlefields of Novi Blaster.

MEGALITH is a difficult Bullet-Hell Boss-Rush where you fight against megalithic machines in a tiny spaceship.

Fight through waves of enemies across shifting arenas, buy upgrades between stages, invest in new ships, research permanent upgrades between runs, and compete on the global leaderboards in this blood-pumping twin stick shooter.

A neon bullet-hell where the swarm is alive. Outlast escalating waves with pure movement — no cover, nowhere to hide. Just geometry, reflexes, and the void between enemies.

DIASPORE is a vector-style space survival roguelite with inertia-based ship handling, a toroidal arena, auto-firing weapons, and a hostile ecosystem that grows more dangerous the longer you stay.

Defend Spacebase 19 from the asteroids swarming down on the station! Shoot down waves of stones and equip different powerful weapons. How many waves can you last? A simple nostalgic retro arcade turret defense shooter.

You've been dropped into enemy space. Weave your Starfighter between alien spaceships, lasers, asteroids and bombs destroying as many as you can and collecting valuable coins and powerups as you go.

Retro arcade classic, Defeat a million invaders from another dimension in this side scrolling shoot'em up.

Inspired by the cult classic Mine Storm, Storm Mined modernizes arcade space shooting with rogue-lite upgrades and rhythm-based stages.

High speed arcade shooter built in the style of a lost 1980s vector game. Fight across looping battlefields, defend ground installations and survive relentless waves of enemy attacks!

A vertical-scrolling space shooter, and a love letter to classic arcade space shooters, Tryü Sora blends retro charm with modern gameplay. Master a handcrafted campaign, explore secrets, and dominate fast-paced modes in this addictive space adventure!

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!

INSPACE 2980 is a stylish and dynamic SHMUP from the 16-bit era of games consoles and arcade machines. Take part in an exciting adventure and save the galaxy! Once again!

This is a retro space shooting game, where you only fight against the strongest enemy. There are 15 unique bosses in the game, and players need to use different weapons and strategies to defeat them. Dedicated to you who are both challengers and retro game lovers.

In the vast depths of space, lies a man with a dark past. Setting himself apart from that old life, and seeking justice against wrongdoing instead of being the cause of it, Captain Righteous uses the Freedom Fighter, his trusty space fighter to search for and combat the evil Captain Buster!

Repel extraterrestrial entities!

Master the difficult art of dodging bullets while blasting thruster flame in the face of your enemies. No guns, no upgrades, no level-ups. Just your reflexes against an endless bullet hell maze of death. How long will you survive?

NEON STORM is a fast-paced top-down Roguelite bullet hell shooter. Pilot your fighter, auto-fire through waves of enemies, dodge deadly attacks, and build powerful upgrades. Survive each run, unlock permanent upgrades, defeat bosses, and chase your highest score!

A throwback to retro shoot'em up games typical of the 80s, where you play as a tooth fairy fighting against rotten teeth and bacteria using different abilities and special shots.