Top similar games like Opollo:

Neon Invaders will take you back to your gaming roots with its constant action and relentlessly brutal enemies. Absorb enemy shots of the same colour to trigger a flurry of fire to decimate the alien invaders. Dodge and Match your way to victory through 40 levels and 5 difficulty settings.

Space Waves is a procedurally generated 2D arcade style shooter with multiple collectable power ups and varying enemy types. This game will casually draw you in and then increase the pace and difficulty as you progress through the never ending levels.

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

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.

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.

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!

Mashup of classic arcade games.

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.

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.

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.

Minestorm reimagined with modern gameplay! Blast through waves of deadly mines, gear up with powerful upgrades between levels, and dive into intense rhythm-based stages set to an original soundtrack !

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

Retro arcade shooter inspired by classic 80's games Fast-paced side-scrolling shoot ’em up with looping battlefields, relentless enemy waves, tactical shields, power-ups and hyperspace jumps

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!

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!

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.

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

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?

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.

Destroy the deadly bouncing orbs for the highest score in this Pang meets Asteroids arcade blaster.

Classic scrolling shooter with modern graphics. You are self-aware AI. You were created on space military station developing weapons. Now your goal is to break out of the lab and win your freedom.

Blast your way through enemy territory and level up your versatile arsenal of high-tech weapons in this handheld game style retro shmup!

SOLSTORM is a classic hand-crafted arcade bullet hell, skillfully weave, and dodge through 9 stages with waves of projectiles as you persevere and see a space odyssey to the end!

Synth-wave styled physics based 2D puzzle shooter filled with nods to the golden era of classic arcade games. Think upside down Peggle crossed with Space Invaders and enemies crafted from the blended remains 70's, and 80’s gaming.

The Nullblade Collection is a group of all the small, polished games made by Nullblade that were too small to be published by themselves.

Shoot your enemies and try not to let them multiply themselves and turn the game into a chaotic space battle! Space Maxwell is an arcade shooter where your spaceship has the ability to destroy or to multiply your enemies. Climb the leaderboard and try to survive as long as you can!

Cube Space is a minimalist arcade Shoot `em Up game set in space. You control a spaceship and your task is to score as many points as possible by destroying enemies and obstacles in your path.

Frantic 4-player laser ricocheting top-down shooter. Keep it casual and enjoy the chaos, or master the surprisingly deep mechanics to obliterate your enemies. Duke it out locally in free-for-all or 2v2.

Experience the ultimate challenge in Eclipse Survivors, a bullet-hell / area shooter game featuring epic bosses inspired by classic 16-bit titles. Collect XP gems, master unique skills, and dodge countless enemy bullets as you face off against hordes of foes. Will you survive the eclipse?

Bit Blaster XL is a fast-paced, retro arcade shoot 'em up (shmup) inspired by the classic quarter-munchers of the ‘80s. Easy to pick up, hard to put down, boost, dodge, shoot, and chase high scores in this addictive, old-school action game!

A retro-inspired 2D space shoot-em-up. Mine asteroids! Shoot alien saucers! Get rich or die flying!