Games like GoodNight
Games like GoodNight include Getting Over It with Bennett Foddy, Mirror 2: Project X, MiSide, Escape the Backrooms, and Garten of Banban. We matched them by the tags players give GoodNight on Steam (Casual, Interactive Fiction, 3D, Singleplayer, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

Getting Over It with Bennett Foddy
Shared: Psychological Horror · Singleplayer · Horror

Mirror 2: Project X
Shared: 3D · Interactive Fiction · Singleplayer

MiSide
Shared: Psychological Horror · Singleplayer · 3D

Escape the Backrooms
Shared: Horror · Psychological Horror · 3D

Garten of Banban
Shared: Singleplayer · Horror · Psychological Horror

Five Nights at Freddy's
Shared: Singleplayer · Horror · Psychological Horror

No, I'm not a Human
Shared: Psychological Horror · Horror · Singleplayer

Buckshot Roulette
Shared: Singleplayer · Horror · 3D

The Death | Thần Trùng
Shared: Psychological Horror · Casual · Horror

Berry Bury Berry
Shared: 3D · Psychological Horror · Singleplayer

Poppy Playtime
Shared: Singleplayer · Horror · Psychological Horror

Chinese Parents
Shared: Casual · Psychological Horror · Singleplayer

Sally Face - Episode One
Shared: Psychological Horror · Indie · Horror

DISTRAINT: Deluxe Edition
Shared: Psychological Horror · Indie · Horror

Firework
Shared: Indie · Horror · Psychological Horror

Little Misfortune
Shared: Psychological Horror · Indie · Singleplayer

Florence
Shared: Casual · Indie · Interactive Fiction

Five Nights at Freddy's 2
Shared: Singleplayer · Horror · Psychological Horror

Five Nights at Freddy's: Security Breach
Shared: Singleplayer · Horror · 3D

Garten of Banban 2
Shared: Singleplayer · Horror · Psychological Horror

KinitoPET
Shared: Psychological Horror · Horror · Indie

Garten of Banban 3
Shared: Singleplayer · Horror · Psychological Horror

Cookie Clicker
Shared: Casual · Horror · Indie

CloverPit
Shared: Psychological Horror · 3D · Horror