Games like Gray Skies, Dark Waters
Games like Gray Skies, Dark Waters include Life is Strange: Before the Storm, Life is Strange: True Colors, THE LONGING, Hellblade: Senua's Sacrifice, and The Invincible. We matched them by the tags players give Gray Skies, Dark Waters on Steam (Female Protagonist, Walking Simulator, Mythology, Multiple Endings, and Choices Matter): closest matches first, and among equally close ones the better-known games.

Life is Strange: Before the Storm
Shared: Female Protagonist · Choices Matter · Story Rich

Life is Strange: True Colors
Shared: Female Protagonist · Choices Matter · Multiple Endings

THE LONGING
Shared: Walking Simulator · Point & Click · Multiple Endings

Hellblade: Senua's Sacrifice
Shared: Female Protagonist · Mythology · Story Rich

The Invincible
Shared: Walking Simulator · Female Protagonist · Choices Matter

Lake
Shared: Walking Simulator · Female Protagonist · Multiple Endings

The Wolf Among Us
Shared: Multiple Endings · Choices Matter · Choose Your Own Adventure

Assassin's Creed® Odyssey
Shared: Mythology · Multiple Endings · Exploration

What Remains of Edith Finch
Shared: Walking Simulator · Female Protagonist · Story Rich

Oxenfree
Shared: Female Protagonist · Choices Matter · Story Rich

Sable
Shared: Female Protagonist · Exploration · Multiple Endings

Detroit: Become Human
Shared: Choices Matter · Multiple Endings · Story Rich

The Henry Stickmin Collection
Shared: Multiple Endings · Choose Your Own Adventure · Choices Matter

Life is Strange Remastered
Shared: Female Protagonist · Choices Matter · Multiple Endings

Life is Strange: Double Exposure
Shared: Female Protagonist · Choices Matter · Choose Your Own Adventure

The Walking Dead: Season Two
Shared: Female Protagonist · Choices Matter · Point & Click

Volcano Princess
Shared: Female Protagonist · Multiple Endings · Choices Matter

Death and Taxes
Shared: Choices Matter · Multiple Endings · Story Rich

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

Stray Gods: The Roleplaying Musical
Shared: Female Protagonist · Choices Matter · Multiple Endings

Submerged
Shared: Female Protagonist · Walking Simulator · Exploration

Dreamfall Chapters
Shared: Female Protagonist · Choices Matter · Story Rich

Gone Home
Shared: Walking Simulator · Female Protagonist · Exploration

The Forgotten City
Shared: Choices Matter · Exploration · Walking Simulator