Games like Pain Pain Go Away!
Games like Pain Pain Go Away! include Finding Paradise, To the Moon, OPUS: Echo of Starsong - Full Bloom Edition, Hellblade: Senua's Sacrifice, and The NOexistenceN of you AND me. We matched them by the tags players give Pain Pain Go Away! on Steam (Adventure, 2D, Singleplayer, Psychological, and Cute): closest matches first, and among equally close ones the better-known games.

Finding Paradise
Shared: Adventure · 2D · Singleplayer

To the Moon
Shared: Adventure · Story Rich · Singleplayer

OPUS: Echo of Starsong - Full Bloom Edition
Shared: 2D · Anime · Female Protagonist

Hellblade: Senua's Sacrifice
Shared: Psychological · Singleplayer · Adventure

The NOexistenceN of you AND me
Shared: Anime · Cute · Psychological

Florence
Shared: Adventure · Cute · Singleplayer

NEEDY STREAMER OVERLOAD
Shared: Anime · Cute · 2D

GRIS
Shared: Adventure · Female Protagonist · Singleplayer

OneShot
Shared: Story Rich · Cute · Singleplayer

Muse Dash
Shared: Cute · Anime · Singleplayer

Hollow Knight: Silksong
Shared: 2D · Singleplayer · Adventure

Far Away
Shared: Singleplayer · Female Protagonist · Story Rich

Impostor Factory
Shared: Adventure · 2D · Story Rich

Before Your Eyes
Shared: Singleplayer · Adventure · Story Rich

MiSide
Shared: Cute · Singleplayer · Story Rich

Higurashi When They Cry Hou - Ch.1 Onikakushi
Shared: Psychological · Anime · Adventure

Mirror 2: Project X
Shared: Anime · Singleplayer · Female Protagonist

Marco & The Galaxy Dragon
Shared: Adventure · Anime · Female Protagonist

WITCH ON THE HOLY NIGHT
Shared: Adventure · 2D · Anime

The Last Campfire
Shared: Adventure · Singleplayer · Cute

Refind Self: The Personality Test Game
Shared: Adventure · 2D · Female Protagonist

Tomb Raider Game of the Year
Shared: Adventure · Singleplayer · Female Protagonist

ICEY
Shared: Adventure · Anime · Female Protagonist

Slime Rancher
Shared: Adventure · Cute · Singleplayer