Games like X Invader
Games like X Invader include Nova Drift, BALL x PIT, Deep Rock Galactic: Survivor, SNKRX, and Brotato. We matched them by the tags players give X Invader on Steam (Shoot 'Em Up, Arena Shooter, Action Roguelike, Bullet Hell, and Twin Stick Shooter): closest matches first, and among equally close ones the better-known games.

Nova Drift
Shared: Shoot 'Em Up · Bullet Hell · Action Roguelike

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

Deep Rock Galactic: Survivor
Shared: Action Roguelike · Bullet Hell · Roguelite

SNKRX
Shared: Action Roguelike · Arena Shooter · Shoot 'Em Up

Brotato
Shared: Action Roguelike · Bullet Hell · Arena Shooter

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Time Wasters
Shared: Action Roguelike · Bullet Hell · Arena Shooter

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

Slime 3K: Rise Against Despot
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

Voidigo
Shared: Action Roguelike · Twin Stick Shooter · Shoot 'Em Up

Rogue: Genesia
Shared: Action Roguelike · Bullet Hell · Twin Stick Shooter

Enter the Gungeon
Shared: Action Roguelike · Bullet Hell · Twin Stick Shooter

Halls of Torment
Shared: Action Roguelike · Bullet Hell · Roguelite

Megabonk
Shared: Action Roguelike · Bullet Hell · Roguelite

Glyphica: Typing Survival
Shared: Arena Shooter · Action Roguelike · Bullet Hell

Hades
Shared: Action Roguelike · Roguelite · Hack and Slash

Nuclear Throne
Shared: Action Roguelike · Bullet Hell · Roguelite

Star of Providence
Shared: Shoot 'Em Up · Action Roguelike · Bullet Hell

SYNTHETIK: Legion Rising
Shared: Top-Down Shooter · Action Roguelike · Roguelite

Noobs Are Coming
Shared: Action Roguelike · Arena Shooter · Bullet Hell

Chippy
Shared: Arena Shooter · Shoot 'Em Up · Bullet Hell

Sektori
Shared: Shoot 'Em Up · Twin Stick Shooter · Arena Shooter

Death Must Die
Shared: Action Roguelike · Bullet Hell · Roguelite

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite