Games like Sunbeam
Games like Sunbeam include Finding Paradise, To the Moon, Impostor Factory, DELTARUNE, and A Bird Story. We matched them by the tags players give Sunbeam on Steam (RPG, Singleplayer, Surreal, 2D, and Interactive Fiction): closest matches first, and among equally close ones the better-known games.

Finding Paradise
Shared: RPG · Emotional · 2D

To the Moon
Shared: Singleplayer · Emotional · RPG

Impostor Factory
Shared: RPG · Emotional · 2D

DELTARUNE
Shared: RPG · Singleplayer · Pixel Graphics

A Bird Story
Shared: Singleplayer · Pixel Graphics · RPG

DAVE THE DIVER
Shared: Singleplayer · Pixel Graphics · RPG

Until Then
Shared: Emotional · Interactive Fiction · 2D

Undertale
Shared: RPG · Singleplayer · Story Rich

OneShot
Shared: Singleplayer · Pixel Graphics · Story Rich

CrossCode
Shared: RPG · Singleplayer · Pixel Graphics

Eastward
Shared: Singleplayer · RPG · Pixel Graphics

FINAL FANTASY VI
Shared: RPG · Singleplayer · 2D

OFF
Shared: RPG · 2D · Singleplayer

The Witcher 3: Wild Hunt — Remastered
Shared: RPG · Singleplayer · Story Rich

FINAL FANTASY V
Shared: RPG · Singleplayer · 2D

There Is No Game: Wrong Dimension
Shared: Singleplayer · Pixel Graphics · 2D

Greyfox RPG
Shared: RPG · Singleplayer · 2D

Vampire Survivors
Shared: 2D · Singleplayer · Pixel Graphics

FINAL FANTASY
Shared: RPG · 2D · Pixel Graphics

In Stars and Time
Shared: RPG · Emotional · 2D

Just a To the Moon Series Beach Episode
Shared: RPG · Emotional · Story Rich

Pocket Mirror ~ GoldenerTraum
Shared: RPG · 2D · Pixel Graphics

Angels of Death
Shared: RPG · 2D · Pixel Graphics

Tales of the Black Forest
Shared: RPG · Pixel Graphics · Singleplayer