Top similar games like Ozone Guardian:

Tankron is a top-down wave survival roguelike in which you fight an ever-increasing amount and variety of enemies. Choose from a variety of upgrades to stand a chance. Discover and choose between different tank specializations to enhance your Build.

Swarmhunters is a top-down arena action shooter. The war between human and bugs has become worse - Project Swarmhunters emerged at this situation. You play as the best space soldiers in the galaxy and your mission is to strike the hive and hunt down the Emperor, supreme commander of bugs.

Experience the thrill of retro arcade shooter action like never before in the pixel perfect arenas of Glitchangels by Pumpkin Games.

You must do your best to protect the world! Destroy all enemies. Get the highest score.

Space Survival is the next great SIMPLE 2D casual space action shooter where you have to defend against wave of enemies, have fast reflexes and strong will to win. It is great way to relax, but also a great challenge. How long can you stay focused?

Vault Apocalypse is a top-down, roguelite twin-stick arena shooter where you fight hordes of monsters while assembling powerful, synergistic builds. Pick your weapons, refine your build and destroy the keepers of the vault.

Welcome to an epic world of endless carnage, where you battle alien foes at lightning fast speeds, and engage in mind meltingly epic boss battles. Immerse yourself in a beautifully hand crafted world, with visually stunning top down graphics and unlimited action packed levels.

Corrupted Beats is a rouguelite top down shooter game. Survive the waves of enemies spawning and reacting to the beat of the music pulsing around you as you create and manage unique builds of various items and weapons to become unstoppable and tame the corrupted music.

Combine abilites to create infinite possibilities of spells and decimate thousands of enemies. King Krieg is a top-down arena roguelite where YOU are the KING and you buy mystical items, find powerful guns, and craft new spells

The dinosaurs have brought the fight to the wrong cat’s territory. Mess with MewMew, get the PewPew: It’s time to send the dinos right back to extinction.

Collect synergizing items to create an overpowered character to fight hordes of cyclops monsters. Cyclo Chambers is a fast-paced, top-down arena shooter with light rogue-like elements. 150 items to choose from to create frantic combinations. Different runs every time.

A modern revisitation of the 80s arcades. Use your Razerwire to cut through waves of nanobugs with a rogue-like inspired progression.

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

Void Prison is a fast paced, endless arcade twin stick shooter that puts you inside of an ever shrinking ring. Survive by fighting emerging enemies around you and don't get consumed by the void. Complete achievements to unlock new skins and powerups and get on top of the leaderboards!

Test your skill while trying to unlock all ships by fighting on 6 unique maps full of different kind of enemies!

Get Off My Space! is a tower defense game where you rely on skillful tower placement and resource management to beat upcoming dangers of the galaxy. Combining strategy and micro managing fire groups you will overcome the hardest level objectives.

Donuts! and Guns!? Choose from a host of Donut! characters (each with multiple unique Guns!) and traverse wonderfully large locations in search for more Donut! companions. Fight through hordes of miscellaneous enemies by using either your Guns!, your Donuts!, or your puzzle solving skills!

A top-down bullet hell space shooter that will test your perseverance. Blast and shoot your way through hordes of asteroids, enemy ships and whatever (and whoever) else you'll run into on your journey! Supports local co-op multiplayer over your local network.

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

ionAXXIA introduces the ‘big brained shooter’ genre with a tactical arcade space shooter. Classic 90's inspired sci-fi action adds a whiff of Dark Souls to its varied-weaponry combat, pairing a need for quick reactions and gaming skills with patience, timing, and smart decision.

Are you gonna shoot? YES! Are you gonna blast? YES! Are you gonna make a big bang? YES! Are you gonna make a big boom? YES! So what do you get? Shooting Blaster Big Bang Boom! Come have some fun, it's Good Time time!

Take command of your ship, step into the arena, dominate your opponents, and put your reflexes and skills to the test!

Time Wasters is a space shooter bullet heaven roguelite. Equip and upgrade weapons, destroy swarms of enemies, and collect Time & Space Cubes to bend the timeline to your advantage.

Gem Raider 2 is an old-school move-and-shoot game. Your objective in each room is to destroy all of the Power Gems and return to the teleport pad to exit. Other Gems can also be destroyed to increase your score. There are 20 rooms and each of the 9 types of enemy Gems has unique weapons or skills.

PewPew! - move, shoot and upgrade!

Neon Arena is a space arcade scoring arena game.

A top down 2D space shooter bullethell with roguelike elements awaits you. Dodge, weave and shoot your way through waves of enemies while gaining upgrades trying to survive as long as possible.

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?

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.

As species, we always needed a story to believe in, we need a hero to prevail, we need a challenge we can overcome, we need a tragedy to make us one.

Mow down the alien hordes, scout for resources and survive. Dreadnought is a mix of Action Tower Defense Survival and Shoot 'Em Up Bullet Hell where you control the ships turrets & defend against waves of enemies. Choose your weapons, upgrade your ship & brace yourself, the horde is coming.

Complete the ritual and defend the shrine in this top-down arena shooter roguelite. Unlock new demons, discover new weapons and choose the right spells and items. Create hell-breaking synergies that will unleash pain and suffering on all ghoulies, elites and bosses.

Customize your Gun Bots to fight through 7 unique worlds with different weather conditions that become more challenging as you progress.

XenoFeud is an insane top-down twin-stick arcade alien shooter, where you must survive hordes of alien intruders while defending a mysterious object in space.

SHOOT 'EM UP!Starlight: Eye of The Storm is a 2D Vertical SHMUP set in a 3D background. Unleash your special powers, upgrade your weapons! Take on 10 Arcade stages or 15 Campaign missions! Drift (auto-pivot mode) behind your enemies and take them on with style!