Top similar games like Dark Old Sun:

Challenge yourself to a new kind of bullet-hell fusion shooter. Change your aircraft to get new skills just when you need them against advancing foes. Aim for the top spot!

Vortex Attack is a frenetic arcade space shooter featuring worldwide tournaments and an intense local multiplayer mode.A worthy successor to Galaga for the XXI century.WARNING: Highly addictive.

Fly through danger filled procedurally generated tunnels, avoiding thousands of enemies, on this throwback to the golden age of arcade games.

Gear up for an intergalactic thrill ride! Space Elite Force is a frenzied space-shooter packed with weapon customization and epic boss battles. Take command of your ship and fight for the survival of humanity!

A throwback to the classic quarter eating arcade games of the 80's. Bit Blaster XL is a retro styled, addictive, and fast paced arcade shoot 'em up! (shmup).

Bezier is a dual stick blaster set inside a vast computer built deep underground. The story traces the principal's escape from this "Noah's Ark" gone wrong. A simple shooter on the surface, the deeper narrative pulls in his relationship between evolution and god, family and love.

Sidescrolling Shoot’em’up that will transport you back into the 90s (and space).

Nex Machina is an intense arcade style twin-stick shooter from Housemarque. Taking hints from both Robotron and Smash TV, Nex Machina focuses on pure action, voxel destruction and competition in the distant, cablepunk themed future.

Star of Providence is a top down action shooter with procedurally generated elements. Explore a large, abandoned facility in search of incredible power, fighting dangerous foes and gaining new weapons and upgrades as you progress.

Nova Drift distills the mechanical depth and strategy of an ARPG into classic arcade space combat. Control an endlessly evolving bio-mechanical ship, face legions of strange and deadly foes, and ride the wake of a dying star across the void.

ASTRO: The Beginning is a dynamic side scrolling shoot 'em up about a close-knit space team caught in a clusterf*ck of epic proportions.Unravel the evil plans of your foes and secrets of world order while taking down various types of enemies and engaging in crazy boss battles.

A legendary SHMUP influential to the best makers in the genre, Hellsinker is now available on steam in its most advanced form! Gameplay, story, graphics, and even music all united into one cohesive and highly dimensional Shoot-em-up!

A malicious orb has cast Savant out of his tower and transformed his surroundings into dangerous enemies!Dodge and shoot your way back up the tower, and blast down waves of enemies as you make your way towards the top! As you progress, you unlock CDs that not only give you new tracks to play to, but also grant you powerful new abilities!

Jet Lancer is a high-velocity aerial combat shooter where you duel enemy aviators, hunt giant robots, and defy death at supersonic speeds as you evolve from an unknown rookie aviator into a once-in-a-generation ACE pilot.

SPINGUN is a "manic two-button arcade shooter". Two buttons. One spaceship. Zero chance to survive.

Blast-off is a hardcore jumper/runner/shmup, where your alter ego will be a ball of anti-matter seeking to leave our Universe. Anti-matter is extremely difficult to exist in our universe, because when it contact with matter it annihilates.

Sky Force Reloaded is a classic shoot ‘em up experience packed in gorgeous visuals and excellent gameplay. Enjoy flashy explosions, beautiful scenery and massive bosses in single player or local cooperative modes.

Pressure Overdrive is arcade twin-stick madness on hot wheels in a colorful bathtub-punk setting!

Legacy of the Elder Star is a mouse-driven shoot 'em up for the rest of us. You are the Cosmonaut, an eternal cosmic hero who must shatter the robotic Infinite Legion and rekindle a dying star!

Pawarumi is a modern shoot’em up set in a retro futuristic sci-fi pre-Columbian universe. You’ll take control of the almighty ship Chukaru and its three unique weapons! Shoot wisely to either do double damage, heal yourself or charge your Super Attack!

Experience your music collection like never before with this intense music driven arcade shooter. Each of your songs will have its own unique ebb and flow based on the music.

From Orange Juice comes a shoot'em'up starring the lone enhanced human, Sora. The sequel of the high-speed shoot'em'up "Suguri", with improved game system and graphics.

Straimium Immortaly is a shmup roguelike dungeoncrawler. Explore the butts-hard procedurally generated Cubicus battling beasties, looting endless item and weapon upgrades and defeating huge boss meanies in your vengeful quest to eradicate the Queeni Emperess.

PULSOR is a fast paced shoot em' up space arcade game where you orbit a black hole. Use your quick reactions and aim to blast the obstacles in your way !

A non-shooting shoot 'em up where you must grow, make friends, and survive together.

Space. Anomalies. Throw down a challenge to mad alien mutants in dynamic firefights with continuous injection of adrenaline! Get ready for the most unforgettable and enchanting space confrontation of all time!

Legendary shoot-'em-up makes its way on the PCs! Abundant explosions, truly epic boss fights and beautifully crafted 3D environments are here to keep you entertained. Sky Force Anniversary offers single player experience and local cooperative mode for 2 players.

Call your friends and lead your squad through the outer space and protect your planet from asteroids and alien ships on this local shoot'em up. Shoot, evolve e explode these space enemies.

Classic color match puzzle meets space shoot'em up action! Hop into your spaceship, open a path through huge waves of aliens and other hazards, and face intense boss battles!

Space shooters never die. 1993 is a testament to that. 1993 is a classic shoot em up celebrating games like Gradius, R-Type and Life Force.

Saviors brings the best bullet hell experience you can find on Steam. Play through 18 challenging stages in this ultimate test of tactics and reflexes.

Jets'n'Guns is a heavy piece of ground shaking rock blasting action with graphics and special effects that will blow you eyes out! Enjoy yourself in almost-insane action adventure of saving the universe from the deadly threat of more than 270 unique monsters in the campaign of 43 levels.

Starward Rogue is a bullet hell twin-stick shooter. Blast your way through the Megalith, a rogue-lite labyrinth lodged in the side of a star. Customize your mech with a huge variety of weapons, perks, and upgrades. Steel yourself for the dangers that lurk in the depths of the dungeon.