Top similar games like Ostallian Core:

HYPERDRIVE is a fast paced Sci-fi action flight sim, combining the infinitely looping gameplay of a roguelike, along with the combat and controls of classic spaceship combat. Avoid obstacles, and take down enemy ships in high speed space combat, all while making as many deliveries as possible!

Gospel of Abaddon is a 2D mix of RPG, Shooter and Roguelike. During WW2, an American pastor deserts the army and after using amphetamine, he sees God telling him to destroy the entire sinful world...

Destroy hordes of strange machines that have invaded the forest. Yawnoc is a chaotic top-down shooter roguelite focused on immersion into the world of Conway's Game of Life and other cellular automata.

Arcadium is a survival roguelite set in a dynamic, ever-changing universe. Journey across space, harvest planetary resources, and craft powerful builds to eradicate relentless waves of aliens. Each playthrough unveils a new and uncharted universe, ensuring endless challenges and discoveries.

Collection of a few arcade classics, remade with a fresh and friendly looking art style and a beautiful soundtrack.

With easy-to-master controls, a simple objective, beautiful top-down 2D graphics and an 80’s arcade game spirit, FINAL PILOT is an online multiplayer battle royale set in the deepest reaches of uncharted space.

Dodge, shoot, survive! Polygon pursuit is an arcade-style twin stick shooter where you are pursued by multiple enemies constantly. You play as a lone circle confined in a polygonal world fighting to survive against waves of unique enemies. This is not an easy game.

An indie story-driven space shooter with intense battles, escalating enemy waves, and massive boss fights. Choose and upgrade ships, unlock powerful weapons, and protect your allies. Upgrade your base and construct a battleship to take on even stronger enemies. All set to a rock & synth soundtrack.

Prepare for an interstellar showdown like no other in a gripping roguelike top-down twin-stick shooter set in the vast depths of space. Pilot your advanced starship, engaging in relentless battles against hordes of alien adversaries. Destroy, Collect, Upgrade, Die, Unlock, Repeat.

Split Drive is a roguelite arena shooter where you have to find your way home through a hostile galaxy, numerous locations and a variety of bosses, all generated procedurally.

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 fleet to defeat, a weapon to collect, and one life to decide everything in the roguelike shooter No Space For All. Let the universe know your second name!

Stop the bogus creeps in this hardcore action roguelite! Equip rad perk based armor in five slots, wear and unlock new gnarly costumes with active and passive abilities, use tubular randomized guns, unlock tons of new ammo types and upgrade your awesome mini-mart!

Shoot! Upgrade! Defend! In this twin-stick roguelike, protect all things bubble from infinite waves of pointy bad guys! Upgrade yourself and your base, or better yet, use a super attack, and stop everything from trying to pop you!

Start off as a weak ship with a simple attack and fight through waves of enemies, earning currency in order to purchase upgrades for your ship. The never ending waves of enemies grow in number, power, and variety as you progress. Purchase upgrades to keep pace with them.

Mination is an arcade twin-stick shooter/survivor with roguelite and story elements. Take control of Minerva as she mines ores, avoids or fight pirates and aims for a high score! Earn space-dollars to upgrade your ship, progress the story to unlock rewards and head back to get on that leaderboard!

Sluggerpunk is a gripping 2D survivors roguelike adventure. As you navigate through a myriad of challenges, hone your skills and strategies to clash with formidable foes lurking in the underground. Build a versatile arsenal of abilities and gear to enhance your chances to survive, but will you?

Brutal twin stick shooter with fun and clever enemies. Also has roguelite and Sci-Fi stuff.

Drift Shooter is an arcade game. Players control a graphic with a car control feel and collect multiple types of weapons in the scene. By combining and using such skills, they can attack waves of enemies.

Neon Fighter is a tiny arcade game packed with lasers and explosions, in which every few seconds you are forced to switch weapons automatically, making you have to adapt quickly to the new situation and re-evaluate your perspective.

A cozy time survival roguelite in space. You steer the shippy while the shooting happens automatically. Meet cute NPCs, solve small quests, and fight quirky enemies with satisfying weapons. A shorter experience for people who don't have much time but love playing (and finishing) games.

Rocket Rats is a survivors-like game where you defeat cheese-based astral bodies in space – as a rat! Clear waves of enemies, collect cheese, upgrade your gear, and conquer the moon!

Broadside Renegades combines auto-firing weapons with manual ship abilities in a rogue-like space pirate adventure. Choose your captain and upgrade your ship to steal the space kings booty. Warp ahead to stay alive, and mind your bearing.

ZEROCRON is a straightforward, classical arcade Twin-Stick Shoot-Em-Up with a strong Commodore-Amiga-era feel. Blast asteroids and enemies to burning pixeldust!

Enter the galactic battlefield in this intense bullet-hell shoot-em-up! Dodge endless waves of bullets, unlock devastating powers and ships, and climb the global ranks in this addictive modern retro arcade experience.

AGIS - A Game In Space is a top-down twin-stick-shooter.

Enter the Blacksea Odyssey, a violent top-down rogue-lite space shoot ‘em up RPG brimming with colossal creatures and runic technologies. Explore dangerous, interstellar spacescapes as you hunt enormous space-behemoths with a harpoon and rune-infused spears.

Star Vortex is a fast paced Action-RPG inspired by classics of the genre. Design your ship, fight your way through hostile alien sectors, upgrade as you salvage rare weapons and experiment with different builds until nothing can stand against you.

Welcome to the world of Polygun, an endlessly customizable hero shooter where you battle against an ever increasing hoard of bloodthirsty shapes! With an array of upgrades to choose from, you'll quickly build from humble beginnings into a hexa-bustin killing machine!

UFO Blast is a fast-paced space shooter that combines the thrill of classic arcade games with modern, responsive controls and vibrant neon visuals. Easy to pick up, but challenging to master—Are you ready for the ultimate blast?

Core Breach is a fast-paced, twin-stick arcade shooter in a pixel art style. Play as a Trojan worm virus, outmaneuvering and destroying antivirus enemies. Upgrade your worm with powerful attacks and skills as you fight to breach the CPU core and uncover its secrets

Dark Galaxy is a fast-paced action roguelike top-down shooter. Pilot a space drone to battle an invasive insectoid species. Illuminate the darkness and grow stronger as you travel to different star systems. Can you free our galaxy from the invaders?

Pilot your sub through waves of angry sea-life and punishing bosses in this aquatic twin-stick shooter.

Dodge the enemies shot and kill them with different weapons. Move, Dodge and Kill is a rogue-lite dungeon crawler in a neon environment.

Drawn into your PC by an antivirus, control a multi barrel tank in this Action Roguelike, 2D Shooter. Defeat motherboard viruses to unlock new zones. The 'UPGRADE MACHINE' grants enhancements every 1-10 seconds. Use points to add upgrades in this Arcade, Top-Down Adventure.