Games like Yoiyami Biscuit
Games like Yoiyami Biscuit include Vampire Survivors, Enter the Gungeon, Skul: The Hero Slayer, Windowkill, and Rabbit and Steel. We matched them by the tags players give Yoiyami Biscuit on Steam (Action, Action Roguelike, Twin Stick Shooter, Bullet Hell, and 2D): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · 2D

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

Skul: The Hero Slayer
Shared: Action · Action Roguelike · 2D

Windowkill
Shared: Action · Action Roguelike · Bullet Hell

Rabbit and Steel
Shared: Action Roguelike · Bullet Hell · Cute

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

BALL x PIT
Shared: Action · Bullet Hell · Action Roguelike

Cult of the Lamb
Shared: Action Roguelike · Cute · 2D

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

Nuclear Throne
Shared: Action Roguelike · Action · Bullet Hell

Gensokyo Night Festival
Shared: Action · Indie · Cute

The Binding of Isaac
Shared: Action Roguelike · Action · Indie

Tower of Babel: Survivors of Chaos
Shared: Action Roguelike · Bullet Hell · Action

Megabonk
Shared: Action Roguelike · Bullet Hell · Action

The Void Rains Upon Her Heart
Shared: Action Roguelike · Bullet Hell · Action

Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Bullet Hell · Action · 2D

永远消失的幻想乡 ~ The Disappearing of Gensokyo
Shared: Bullet Hell · Action · Cute

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

Last Command
Shared: Bullet Hell · 2D · Cute

Rogue Legacy
Shared: Action Roguelike · Action · 2D

Minishoot' Adventures
Shared: Twin Stick Shooter · Bullet Hell · Top-Down

Star of Providence
Shared: Action Roguelike · Bullet Hell · Action

BlazBlue Entropy Effect
Shared: Action Roguelike · Action · 2D

Relic Hunters Zero: Remix
Shared: Action · Twin Stick Shooter · Action Roguelike