Games like Who's That Flying?!
Games like Who's That Flying?! include Skul: The Hero Slayer, Cyberhunt, RADical ROACH Remastered, ICEY, and My Friend Pedro. We matched them by the tags players give Who's That Flying?! on Steam (Action, Indie, Casual, Shoot 'Em Up, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Skul: The Hero Slayer
Shared: Action · Indie · Singleplayer

Cyberhunt
Shared: Action · Indie · Casual

RADical ROACH Remastered
Shared: Action · Indie · Casual

ICEY
Shared: Action · Indie · Side Scroller

My Friend Pedro
Shared: Action · Indie · Singleplayer

Timberman
Shared: Casual · Indie · Action

SAMOLIOTIK
Shared: Indie · Action · Casual

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

Gang Beasts
Shared: Action · Casual · Indie

Gensokyo Night Festival
Shared: Action · Indie · Casual

Superflight
Shared: Indie · Casual · Action

One Finger Death Punch
Shared: Action · Indie · Singleplayer

Octogeddon
Shared: Action · Indie · Shoot 'Em Up

Vampire Survivors
Shared: Indie · Singleplayer · Casual

Zombotron
Shared: Action · Indie · Singleplayer

DRAINUS
Shared: Action · Indie · Shoot 'Em Up

Hades
Shared: Indie · Action · Singleplayer

SUPERHOT
Shared: Action · Indie · Singleplayer

State of Anarchy
Shared: Action · Indie · Casual

Dead Bits
Shared: Action · Indie · Casual

Bladed fury
Shared: Action · Indie · Casual

Caster
Shared: Action · Indie · Casual

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

Super Fancy Pants Adventure
Shared: Action · Indie · Casual