Games like Project X: Light Years
Games like Project X: Light Years include Bit Blaster XL, Nova Drift, Planes, Bullets and Vodka, Vampire Survivors, and Huntdown. We matched them by the tags players give Project X: Light Years on Steam (Side Scroller, Bullet Hell, Shoot 'Em Up, Competitive, and Shooter): closest matches first, and among equally close ones the better-known games.

Bit Blaster XL
Shared: Bullet Hell · Shoot 'Em Up · Shooter

Nova Drift
Shared: Bullet Hell · Shoot 'Em Up · Arcade

Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Bullet Hell · Arcade

Vampire Survivors
Shared: Bullet Hell · 2D · Arcade

Huntdown
Shared: Side Scroller · Shooter · Shoot 'Em Up

LUFTRAUSERS
Shared: Bullet Hell · Arcade · Shoot 'Em Up

DRAINUS
Shared: Shoot 'Em Up · Shooter · Bullet Hell

BALL x PIT
Shared: Bullet Hell · Arcade · Shoot 'Em Up

ZeroRanger
Shared: Shoot 'Em Up · Bullet Hell · Arcade

METAL SLUG
Shared: Side Scroller · Arcade · Shoot 'Em Up

Knightmare Tower
Shared: Side Scroller · Bullet Hell · Shoot 'Em Up

Alex Jones: NWO Wars
Shared: Side Scroller · Shoot 'Em Up · Shooter

Ikaruga
Shared: Bullet Hell · Shoot 'Em Up · Arcade

Sine Mora
Shared: Shoot 'Em Up · Bullet Hell · Side Scroller

Broforce
Shared: 2D · Side Scroller · Action

Super Bit Blaster XL
Shared: Bullet Hell · Shoot 'Em Up · Arcade

Sky Force Reloaded
Shared: Shoot 'Em Up · Bullet Hell · Arcade

Jets'n'Guns 2
Shared: Shoot 'Em Up · Side Scroller · Bullet Hell

Star Saviors
Shared: Bullet Hell · Shoot 'Em Up · Arcade

Kero Blaster
Shared: Side Scroller · Shoot 'Em Up · Shooter

METAL SLUG 3
Shared: Side Scroller · Arcade · Shooter

Beat Hazard
Shared: Bullet Hell · Shoot 'Em Up · 2D

DoDonPachi Resurrection
Shared: Bullet Hell · Shoot 'Em Up · Shooter

Guns, Gore & Cannoli
Shared: Side Scroller · Shoot 'Em Up · 2D