Games like Ayako's Mission
Games like Ayako's Mission include Planes, Bullets and Vodka, Bit Blaster XL, Vampire Survivors, BALL x PIT, and LUFTRAUSERS. We matched them by the tags players give Ayako's Mission on Steam (Action, Casual, Shoot 'Em Up, Bullet Hell, and Arcade): closest matches first, and among equally close ones the better-known games.

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

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

Vampire Survivors
Shared: Bullet Hell · Casual · 2D

BALL x PIT
Shared: Action · Bullet Hell · Arcade

LUFTRAUSERS
Shared: Action · Bullet Hell · Arcade

Cyberhunt
Shared: Action · Casual · Shoot 'Em Up

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

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

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

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

DRAINUS
Shared: Action · Shoot 'Em Up · Shooter

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

DJMAX RESPECT V
Shared: Casual · Action · Anime

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

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

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

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

Revolution Ace
Shared: Action · Shoot 'Em Up · Bullet Hell

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

TouHou Makuka Sai ~ Fantastic Danmaku Festival
Shared: Action · Bullet Hell · Casual

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

Rabi-Ribi
Shared: Bullet Hell · Anime · Action

Touhou Tenkuushou ~ Hidden Star in Four Seasons.
Shared: Bullet Hell · Shoot 'Em Up · Arcade

Rocket Rats
Shared: Casual · Bullet Hell · Action