Games like Project Arrhythmia on Steam
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Project Starship
Project Starship is an arcade bullet-hell with random mechanics. No match will ever be the same. Who will you be? Garret or Gwen? Will you save the world from the mighty cthulhu?
Touhou Kinjoukyou ～ Fossilized Wonders.
Team Shanghai Alice presents a bullet hell shooter! The 20th installment of the Touhou Project. Utilize the powers you've acquired to overcome new challenges!
Audiosurf 2
Ride your music in more ways than ever before. Audiosurf 2 is the music game for your entire music collection. Hundreds of mods/skins on Workshop. Free demo available.
Sixtar Gate: STARTRAIL
Sixtar Gate: STARTRAIL is a rhythm game for keyboard set against a space exploration backdrop. Captain your science vessel alongside your navigator Shii as you explore the vast Sixtar system!
Hyperspace Invaders II: Pixel Edition
Hyperspace Invaders II: Pixel Edition is a hardcore, uncompromising vertical scrolling bullet hell/invader hell shooter (shmup) that doubles as a techno-based lightsynth, triggering bursts of funky invaders at the pulse of a relentless beat.
東方幕華祭 TouHou Makuka Sai ~ Fantastic Danmaku Festival
Fantastic Danmaku Festival is a Touhou Project fanfiction STG with colourful danmaku, beautiful remix music and original music. Besides the characters we know in Touhou Project, there is also a brand new original character named Nix in this game! With the Scarlet Devil mansion as their stage, the girls are soaring in the sky of Gensokyo!
Beat Hazard 2
Experience your music collection as 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.
Melatonin
Melatonin is a rhythm game about dreams and reality merging together. It uses animations and sound cues to keep you on beat without any intimidating overlays or interfaces. Harmonize through a variety of dreamy levels containing surprising challenges, hand-drawn art, and vibrant music.
Drums Rock
Drums Rock is an arcade drums game for VR, follow the rhythm of rock with your drums and smash the demons. Live a unique campaign: with different levels, challenges, songs and worlds. Drums Rock is an ideal game to feel like a rock hero, while destroying hordes of demons to the rhythm of rock!
Intake
Intake is the new retro-futuristic drugstep arcade shooter from Cipher Prime. In this polychromatic love child of Dr. Mario and Ikaruga, you battle a never-ending barrage of pills, pushing your skill and reflexes to the limit to avoid a lethal dosage.
Before the Echo
Before the Echo combines elements of both rhythm and role-playing games to create an entirely unique experience.
Horizon Shift
Horizon Shift is an explosive wave based single screen shooter with a ton of new ideas and platformer elements. Do what it takes to protect your horizon from the ever encroaching enemy attack!
Super Hexagon
Super Hexagon is a minimal action game by Terry Cavanagh, with music by Chipzel.
Frederic: Resurrection of Music Director's Cut
New version of cult game with new levels and exclusive Steam online multiplayer! Frederic Chopin – a long time deceased classical compositor – returns back from beyond the grave to fight intense musical duels. In his way stand some of the worlds greatest pop stars charmed with enormous profits that wild commercialization provides
Nex Machina
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.
BLUE REVOLVER
Fight, fly, flourish! BLUE REVOLVER is a manic arcade-style shoot-em-up built for newcomers and psychos alike. Powerful special weapons cut through tough areas, while an adaptive difficulty system tailors the game to your skill level as you evade and counter a maniac environmental force!
UBERMOSH Vol.5
The fifth volume of the arcade series UBERMOSH.
Hatsune Miku VR
World-famous virtual singer Hatsune Miku invites you to join her on stage in in this VR music game! Aim for a perfect score as she sings and dances to some of her most iconic songs.
Revolution Ace
A deep, tactical shoot'em up. With every takedown, you’ll earn cash and xp to upgrade your ship and unlock new abilities. Online and local co-op. Unique versus mode. Realistic physics and water simulation.
Rift of the NecroDancer
The NecroDancer's back in an all-new rhythm game! Dragged into a strange new world, Cadence must engage in musical combat with monsters surging through the Rift! Face pulse-pounding Rhythm Rifts where every beat is a battle, all set to an original soundtrack by Danny Baranowsky & friends.