Games like Rue Valley
Games like Rue Valley include Disco Elysium - The Final Cut, The Walking Dead, The Wolf Among Us, Firewatch, and Esoteric Ebb. We matched them by the tags players give Rue Valley on Steam (Story Rich, Adventure, Isometric, Point & Click, and Psychological): closest matches first, and among equally close ones the better-known games.

Disco Elysium - The Final Cut
Shared: Story Rich · Isometric · Point & Click

The Walking Dead
Shared: Story Rich · Adventure · Point & Click

The Wolf Among Us
Shared: Story Rich · Adventure · Visual Novel

Firewatch
Shared: Adventure · Story Rich · Atmospheric

Esoteric Ebb
Shared: Story Rich · Isometric · Singleplayer

Before Your Eyes
Shared: Story Rich · Emotional · Adventure

To the Moon
Shared: Story Rich · Adventure · Emotional

The Walking Dead: Season Two
Shared: Adventure · Story Rich · Point & Click

Until Then
Shared: Story Rich · Visual Novel · Psychological

Finding Paradise
Shared: Story Rich · Adventure · Emotional

What Remains of Edith Finch
Shared: Story Rich · Adventure · Atmospheric

Night in the Woods
Shared: Story Rich · Adventure · Atmospheric

Tiny Bunny
Shared: Story Rich · Visual Novel · Atmospheric

Hellblade: Senua's Sacrifice
Shared: Story Rich · Psychological · Atmospheric

Fran Bow
Shared: Story Rich · Point & Click · Adventure

The Witcher 3: Wild Hunt — Remastered
Shared: Story Rich · Adventure · Atmospheric

Kentucky Route Zero: PC Edition
Shared: Adventure · Point & Click · Story Rich

OPUS: Echo of Starsong - Full Bloom Edition
Shared: Story Rich · Visual Novel · Emotional

Florence
Shared: Adventure · Story Rich · Singleplayer

Detroit: Become Human
Shared: Story Rich · Singleplayer · Adventure

OneShot
Shared: Story Rich · Adventure · Atmospheric

Sally Face - Episode One
Shared: Story Rich · Adventure · Point & Click

Batman - The Telltale Series
Shared: Story Rich · Adventure · Singleplayer

Brothers - A Tale of Two Sons
Shared: Adventure · Story Rich · Atmospheric