Games like Like Dreamer
Games like Like Dreamer include BALL x PIT, Escape From Duckov, DoDonPachi Resurrection, Bit Blaster XL, and Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil. We matched them by the tags players give Like Dreamer on Steam (Action, Shooter, Shoot 'Em Up, Bullet Hell, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

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

Escape From Duckov
Shared: Action · Shooter · Top-Down Shooter

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

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

Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Shoot 'Em Up · Bullet Hell · Action

REDNEG ALLSTARS SWING-BY EDITION
Shared: Action · Shooter · Shoot 'Em Up

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

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

Touhou Kouryudou ~ Unconnected Marketeers.
Shared: Action · Shoot 'Em Up · Bullet Hell

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

Mirage Feathers
Shared: Bullet Hell · Shoot 'Em Up · Shooter

Touhou Juuouen 〜 Unfinished Dream of All Living Ghost.
Shared: Action · Shoot 'Em Up · Shooter

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

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

CosmoDreamer
Shared: Action · Bullet Hell · Shooter

Black Market of Bulletphilia ~ 100th Black Market.
Shared: Shoot 'Em Up · Shooter · Action

Revolution Ace
Shared: Action · Shoot 'Em Up · Shooter

Neptunia Shooter
Shared: Action · Bullet Hell · Shoot 'Em Up

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

Rabbit and Steel
Shared: Bullet Hell · Cute · Action

DEVIL BLADE REBOOT
Shared: Shooter · Action · Shoot 'Em Up

Minishoot' Adventures
Shared: Bullet Hell · Cute · 2D

Mushihimesama
Shared: Shoot 'Em Up · Action · Bullet Hell

BLUE REVOLVER
Shared: Shoot 'Em Up · Action · Bullet Hell