Games like Waifu Space Conquest
Games like Waifu Space Conquest include Vampire Survivors, Bit Blaster XL, Planes, Bullets and Vodka, DJMAX RESPECT V, and LUFTRAUSERS. We matched them by the tags players give Waifu Space Conquest on Steam (Bullet Hell, Action, Casual, Shooter, and Arcade): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · 2D · Casual

Bit Blaster XL
Shared: Bullet Hell · Shooter · Arcade

Planes, Bullets and Vodka
Shared: Action · Casual · Bullet Hell

DJMAX RESPECT V
Shared: Casual · Action · Anime

LUFTRAUSERS
Shared: Bullet Hell · Action · Arcade

Rocket Rats
Shared: Bullet Hell · Casual · Action

Muse Dash
Shared: Cute · Casual · Anime

SUPER CHICKEN JUMPER
Shared: Arcade · 2D · Cute

Rabi-Ribi
Shared: Bullet Hell · Anime · Cute

Exit the Gungeon
Shared: Action · Bullet Hell · Arcade

BALL x PIT
Shared: Action · Bullet Hell · Arcade

Gensokyo Night Festival
Shared: Action · Casual · Cute

Timberman
Shared: Casual · Action · 2D

Broforce
Shared: Action · 2D · Shooter

Shower With Your Dad Simulator 2015: Do You Still Shower With Your Dad
Shared: Arcade · Casual · 2D

Boneraiser Minions
Shared: Bullet Hell · 2D · Casual

Super Bit Blaster XL
Shared: Bullet Hell · Arcade · Action

Commando Collection
Shared: Action · Bullet Hell · Shooter

Neptunia Shooter
Shared: Bullet Hell · Action · Cute

Nova Drift
Shared: Bullet Hell · Arcade · Shooter

Last Command
Shared: Bullet Hell · 2D · Action

Mirage Feathers
Shared: Bullet Hell · Cute · Shooter

Dimension Tripper Neptune: TOP NEP
Shared: Action · Bullet Hell · Arcade

Cyberhunt
Shared: Action · Casual · Arcade