Games like Santo Island Incident
Games like Santo Island Incident include Blue Prince, Fallout 4, FAR: Lone Sails, Firewatch, and Outer Wilds. We matched them by the tags players give Santo Island Incident on Steam (Post-apocalyptic, Atmospheric, Singleplayer, Investigation, and Mystery): closest matches first, and among equally close ones the better-known games.
Blue Prince
Shared: Mystery · Puzzle · Investigation
Fallout 4
Shared: Post-apocalyptic · Singleplayer · Atmospheric
FAR: Lone Sails
Shared: Atmospheric · Post-apocalyptic · Singleplayer
Firewatch
Shared: Atmospheric · Adventure · Mystery
Outer Wilds
Shared: Mystery · Atmospheric · Exploration
Sherlock Holmes: The Devil's Daughter
Shared: Mystery · Adventure · Puzzle
Return of the Obra Dinn
Shared: Atmospheric · Mystery · Singleplayer
What Remains of Edith Finch
Shared: Atmospheric · Mystery · Singleplayer
The Painscreek Killings
Shared: Investigation · Mystery · Atmospheric
The House of Da Vinci
Shared: Mystery · Atmospheric · Puzzle
The Room
Shared: Atmospheric · Mystery · Puzzle
Metro Exodus
Shared: Post-apocalyptic · Singleplayer · Atmospheric
Murders on the Yangtze River
Shared: Puzzle · Mystery · Adventure
Chants of Sennaar
Shared: Singleplayer · Puzzle · Atmospheric
The Talos Principle
Shared: Puzzle · Atmospheric · Singleplayer
Fallout: New Vegas
Shared: Post-apocalyptic · Singleplayer · Exploration
S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: Post-apocalyptic · Atmospheric · Singleplayer
Sherlock Holmes: Crimes and Punishments
Shared: Investigation · Mystery · Atmospheric
Strange Horticulture
Shared: Mystery · Atmospheric · Puzzle
Quern - Undying Thoughts
Shared: Atmospheric · Mystery · Puzzle
Unheard - Voices of Crime
Shared: Mystery · Thriller · Puzzle
Stray
Shared: Atmospheric · Singleplayer · Adventure
The Room Three
Shared: Mystery · Puzzle · Atmospheric
The Room 4: Old Sins
Shared: Mystery · Puzzle · Singleplayer