Top similar games like On The Outside:

A fast-paced sci-fi action roguelite where you battle escalating enemy waves, combine powerful abilities, and take on challenging boss encounters.

Can you survive the Empire's onslaught? Avoid the attacking enemies and upgrade your ship to last long enough to escape in this space survivorslike.

Year 2425, humanity colonized the exoplanet named SACH-041840. But then, in the 55th year "they" came; No one knows who or what controls them, but what is known is that if they reach the colony proper, it will be annihilated. It is up to you to bring the WRECKONING upon them!

Cosmic Paradox: Noire is a 2D top-down shoot ‘em up adventure set in a world of two overlapping dimensions. Witness the battle between the Vex Accord and the Oronix Empire, increase your odds of survival with the right upgrades and choose a ship that is best suited to your playstyle.

Stop the Saturnians is a shooter inspired by classic arcade games. Dodge enemy fire, destroy procedurally generated alien waves and fight massive bosses. Collect resources in the midst of combat to upgrade your ship or improve Earth's defenses. Protect yourself and the planet both!

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.

a bullet heaven type game inspired by retro shoot'em up games of the 90s. Survive and defeat waves of enemies in an infinite space arena, acquire power ups and defeat the final boss !

Alpha One is a top-down action, 4X-lite strategy game. Each action level is a turn in a strategic conflict as you race to collect resources, acquire upgrades, expand territory and build defenses. All to find a way home!

Pilot a heavily armed mech against relentless hordes. Fly, blast, and burn your way through swarms, draft powerful items to create game-changing builds, and take down titanic bosses in this fast-paced action roguelite.

Defend your Starbase in a vibrant roguelite shooter. Upgrade your weapons mid-run, unlock permanent rewards, and survive the endless onslaught.

Autothysis is a first-person tower defense game where strategy meets precision. Deploy turrets, manage resources, and fight swarms of insectoid enemies. Target weak points to shatter foes while upgrading defenses to survive escalating waves. Can you withstand the oncoming horde?

Astrolite is an arcade-styled bullet heaven in a race against time. Conquer each planet before the forces of the galaxy overpower you. The Galaxy stands united. The World Guardians prepare a final stand against their greatest enemy... that enemy... is you.

Geometry Nexus is a neon action roguelike where your weapons fire automatically. Dodge enemy swarms, collect upgrades, trigger Overdrive, grow stronger between runs, and survive ten minutes to defeat the Nexus Guardian.

2D space shooter and turret defense come together to create the Planetary Defense System this world needs! Shoot down asteroids and aliens and survive the bosses in this arcade like game featuring customizable satellites, projectiles, and upgradable Cannon and Planet Shield systems.

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.

AstroWars is a top down 2d shooter with monsters and a blue gun. Earn score by killing monsters and try to beat your top score.

Defend the planet from endless waves of alien ships in this retro arcade shooter. Craft the turret to best fend off the alien assault with shotgun, explosive and many more modifiers.

Land. Jetpack. Shoot. Three arcade games in one — blast through 90 bite-sized stages across 30 missions to rebuild a shattered galactic map. Fast, precise, pick-up-and-play action with classic arcade DNA.

Run, Ronald, Run is an incremental arena shooter about a small circle trying to survive against a very large number of angry shapes.

You’re being Bounty-Hunted! Run, Build your ship piece-by-piece and make it work with the parts you find, Destroy outposts and waves of fleets, and Pick your battles carefully to overcome your hunters in this Fast-Paced Top-Down Action Roguelite Shooter.

Sanctum Arcadia is a game where you must fight your way through increasingly dangerous zones filled with enemies, hazards, and mystery. Sanctum Arcadia has a unique but still familiar progression system, challenging and engaging combat, all in a smooth Arcade-like experience.

Starcore Survivor is a top-down arena auto-shooter roguelite. Move, dodge, collect materials, and shape each run through 20 waves of combat, upgrade choices, between-wave shops, weapon fusion, evolution recipes, relics, bosses, and escalating Danger levels.

Cosmic Run is a single-player space roguelite where you battle relentless galactic enemies, strategically upgrade your ship, and help the Zogark family survive their journey across the galaxy. Build powerful combinations, adapt to chaotic encounters, and escape one broken system after another.

Your own reactor is the thing trying to kill you. Every kill feeds the heat, and the coolant those kills drop is the only thing that vents it — lying exactly where the danger just was. A twin-stick score chase where diving into the crowd is the only way to survive it. Five modes, co-op up to four.

Bullet heaven meets base building in a survivorslike set inside a broken computer. Fight corrupted files, stack upgrades, and place automated helpers that shoot, shield, repair, collect, and trap while you stay alive.

A vertical space shooter about a combat pilot who must break through an enemy armada and warn their homeworld. Maneuver through hostile fire, battle commanders and bosses, upgrade your ship, and assemble powerful equipment synergies.

Project Sundive is wave-based arena auto-shooter roguelite, focusing on ship customization and ridiculously overpowered builds

TRAXION is a space-themed cave flyer featuring beautiful pixel art, great music, and tons of meticulously crafted physics puzzles.

Neon Arena is a space arcade scoring arena game.

An arena shooter where the arena keeps folding into 12 shapes of space: Torus, Möbius, Klein bottle, and more. 90+ weapons that curve along the geometry. 6+ characters that each play differently. Hundreds of enemies stream at you the whole time. Push the limits of the universe.

A fast-paced roguelike space shooter where every credit counts. Fight through dangerous sectors, upgrade your ship mid-battle, and convert your earnings into permanent power. Because when you die, you keep what matters.

Fuel is life. Survive relentless alien swarms in this fast-paced arcade shooter featuring auto-targeting weapons, deadly terrain navigation, and score-chasing chaos.

Rise of Mutant Swarms is a strategy survival tower-defense game where you defend the base against waves of evolving mutant enemies. Place and upgrade turrets, adapt to enemy abilities, and make critical decisions as the pressure rises with every wave.

Halo: Spartan Assault brings the excitement of Halo combat to Steam for the very first time. Battle your way through 30 action-packed missions against the Covenant as you explore the origin of the Spartan Ops program featured in Halo 4. *DirectX feature level 10 required. *

Alpha Force Zero is an intense top-down bullet-hell adventure that requires skill and planning. Utilize multiple weapon systems including an Auto-Turret with adjustable firing modes and unlock upgrades that you can equip in your ship to give you the upper hand. Dodge, fight, survive!