Games like Attack from Planet Smiley
Games like Attack from Planet Smiley include Vampire Survivors, The Escapists 2, UFO 50, Timberman, and The Escapists. We matched them by the tags players give Attack from Planet Smiley on Steam (Arcade, Score Attack, Pixel Graphics, 2D, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Pixel Graphics · 2D · Singleplayer

The Escapists 2
Shared: Pixel Graphics · 2D · Co-op

UFO 50
Shared: Pixel Graphics · Arcade · 2D

Timberman
Shared: Pixel Graphics · Arcade · 2D

The Escapists
Shared: Pixel Graphics · 2D · Singleplayer

Rhythm Doctor
Shared: Pixel Graphics · Singleplayer · Indie

Broforce
Shared: Pixel Graphics · 2D · Co-op

Super Hexagon
Shared: Arcade · Indie · Singleplayer

Terraria
Shared: 2D · Pixel Graphics · Co-op

The Binding of Isaac: Rebirth
Shared: Pixel Graphics · Indie · Singleplayer

Balatro
Shared: Singleplayer · Pixel Graphics · Strategy

Baba Is You
Shared: Singleplayer · Pixel Graphics · Indie

Papers, Please
Shared: Pixel Graphics · Indie · Singleplayer

Exit the Gungeon
Shared: Arcade · Pixel Graphics · Indie

Nubby's Number Factory
Shared: Arcade · Singleplayer · Strategy

SUPER CHICKEN JUMPER
Shared: Arcade · 2D · Pixel Graphics

Party Hard
Shared: Pixel Graphics · Strategy · Indie

LUFTRAUSERS
Shared: Arcade · Pixel Graphics · Indie

Shovel Knight: Treasure Trove
Shared: Pixel Graphics · 2D · Indie

A Dance of Fire and Ice
Shared: Arcade · Singleplayer · 2D

Windowkill
Shared: Arcade · 2D · Indie

Gunpoint
Shared: 2D · Pixel Graphics · Indie

Skul: The Hero Slayer
Shared: Pixel Graphics · Indie · 2D

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