Top similar games like Calibration Sequence:

MEGALITH is a difficult Bullet-Hell Boss-Rush where you fight against megalithic machines in a tiny spaceship.

Chaotic boss-rush, bullet-hell-y, twin-stick arena shooter mayhem! Dynamically changing arena forces you to be vigilant: Watch the bullets, watch the walls!

Fight against waves of enemies to become the ultimate space survivor. Arcade Space Survivor is an arcade-styled action-roguelike. The game offers an innovative and unique experience within the survivors-like genre.

Survive against a swarm of geometric enemies and the bosses guarding your way forward in this fast, minimalist arcade survival game. Bounce, boost, and slide through the chaos, chain kills to build your multiplier, and chase the leaderboard. Simple to pick up, brutal to master.

DodgeKill is a minimalist bullet hell arcade game. Your cursor is both your heart and your weapon : dodge enemy waves, then strike back! Will you survive until the end ?

A linear danmaku shoot-em-up with some visual novel elements. Clear 6 stages across 4 difficult settings, each with unique enemy spawns, bullet patterns and boss phases. The game is structured to have each difficulty cleared in sequence, with the full plot unfolding across each one. 

You thought geometry was difficult? Now it's got a gun! Face the fury of the Seven Deadly Shapes and blast your way through a barrage of bullets and lasers in this highly accessible bullet hell.

Face off in a challenging bullet-hell arena shooter, and try to clear bite-sized boss rush challenges. Learn to dodge their attacks, cast spells to gain an upper hand, and kill everything that gets in your way.

Finding Mom is a Singleplayer Bullet-Hell following a boy who is trying to find his captured mom. Experience the story, and enjoy the atmosphere that is created through handmade pixel art, music, and gameplay.

A blindingly-fast arcade shooter. Become the deadliest virus, and destroy everything in your path.

HYPER DETONATOR is a chain-reaction bullet hell shooter set in cyberspace. Blast through the virus spreading across the mainframe, and detonate bombs to set off devastating chain reactions. How long will you survive?

Deflect bullets and take down invading robot minibosses with just your laser sword, in pursuit of the highest combo!

Pilot the tank Golgalian in an endless micro shoot 'em up inspired by arcades old and new. Blast mechs, dodge bullets, and compete on the global leaderboard!

"Survive the crushing gravity and conquer the void! Alpha Star is a fast-paced 2D space shooter where you must navigate through evolving bullet hells and dynamic black holes. Upgrade your ship, survive 10 intense mission phases, and reach the heart of the Singularity."

Fight through waves of enemies across shifting arenas, buy upgrades between stages, invest in new ships, research permanent upgrades between runs, and compete on the global leaderboards in this blood-pumping twin stick shooter.

A roguelite bullet heaven bathed in neon geometry. Grab weapons that evolve into screen-filling chaos, survive multi-phase bosses, and chase humanity's last signal through the silent dark.

Super Nano Blaster is a shoot-em-up for PC and Mac, offering single-player and local co-op modes, that transports you to a retro-style digital universe. Delve into technology with your vessel and destroy anything that gets in your way!

Cell #31 is a fast-paced and intense twin-stick shooter where you play as a cell fighting to survive an ever-increasing barrage of bullets and enemies.

A progression-driven twin-stick shooter. Customize ships, combine powerful cards, and forge unique builds through a massive talent tree as you race to stop the Anomaly.

Repel extraterrestrial entities!

move fast → build weapon evolutions | crack elites + bosses | chase a high score | pixel-art bullet heaven | free updates forever

Well, the physpace is being destroyed, glitching by numerous hordes of malicious duplicating codes from the bitspace. People are panicking, we must send our final attempt to fix the issue, you must be trained to fix the bitspace and survive in it during the process, in its current, decaying status.

Wellenfjord Danmaku Adventure is a 2D danmaku shooter bullet hell game, featuring minimalist arts and fast-pacing combat. Includes Campaign and Arcade.

Super-tight controls and satisfying mechanics will guide you from the seemingly-peaceful early levels all the way to complete insanity in this survival space adventure. Beginner pilots will grow, skilled pilots will be challenged, but only the best will reach the end.

Pilot a momentum-driven ship through the cooled remains of dead star systems. Master a growing arsenal, take on 10+ unique epic bosses, and tackle four sectors your way. The world is seed-generated. Enjoy 4 difficulty levels, NG+, and a rewarding skill / unlock system.

Choose a geometric core, survive escalating waves with automatic weapons, and evolve matching weapons and passives into stronger builds. Explore sectors, find unlocks, and defeat the boss.

Jump from Node to Node while surviving the Chasers onslaught. Keep moving, Keep Upgrading, and don't get terminated.

Frenetic 2D action in the style of Space Invaders! Customize your spaceship, face hordes of enemies, and challenge yourself in multiple modes, including Campaign, Arcade, Invasion, and Survival. Upgrade your ship, collect power-ups, and face unique challenges in every battle.

A shoot em' up with a manga inspired look. Destroy enemies, and use their salvage to gain more power.

Clusterbug is a space-themed, insect-filled, and futuristic bullet hell shoot 'em up. Travel through the insect-filled world as you cleanse it from a bio-mechanical virus that has turned any living being infected by it into frenzied mech mutations, bringing freedom and peace.

Starfighter Hero is a bullet heaven rogue-lite where you pilot and upgrade your starship. Unleash experimental weapons, amass escalating power, and steer your ship expertly to survive relentless swarms.

BANAN'EM UP! is a tiny challenging arcade shoot’em up where you shoot down quirky aliens to save your planet. Evade bullets, shoot enemies, get upgrades, survive for challenging waves to defeat the final boss, "The MONKE". Die, learn, repeat: get stronger, be powerful!

Shooting Things Incrementally is a twin-stick shooter merged with an incremental. Start from nothing and build yourself into an unstoppable force as you fight hordes of deadly foes and bosses at the edge of the galaxy.

Engage in an intense space shooter that you can play in single-player or multiplayer with up to 6 players. Play a variety of different spaceships, each with their own unique stats, components, and playstyles!

Fast paced action arena roguelite where you defeat waves of enemies, hazards and dangerous threats using only your dash as a weapon. Don't get fooled, your dash is a powerful weapon. Upgrade your ship and buy unique abilities to chose your own playstyle and turn your ship into a killing machine.

<DESTROY> enemies. <COLLECT> orbs. <COMPETE> on leaderboards. <INITIALIZE>