Games like 8th Avenue
Games like 8th Avenue include Poppy Playtime, Outer Wilds, Murdered: Soul Suspect, Stray, and Unheard - Voices of Crime. We matched them by the tags players give 8th Avenue on Steam (Singleplayer, Supernatural, Adventure, Puzzle, and Simulation): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Singleplayer · Puzzle · Horror

Outer Wilds
Shared: Exploration · Adventure · Puzzle

Murdered: Soul Suspect
Shared: Adventure · Supernatural · Singleplayer

Stray
Shared: Adventure · Singleplayer · Exploration

Unheard - Voices of Crime
Shared: Puzzle · Detective · Mystery

Firework
Shared: Puzzle · Singleplayer · Horror

Murders on the Yangtze River
Shared: Adventure · Puzzle · Detective

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

The Scourge Tai ng
Shared: Singleplayer · Supernatural · Exploration

Chants of Sennaar
Shared: Singleplayer · Adventure · Puzzle

Return of the Obra Dinn
Shared: Puzzle · Singleplayer · Detective

鬼谷八荒 Tale of Immortal
Shared: Singleplayer · Simulation · RPG

The Bridge Curse Road to Salvation
Shared: Puzzle · Supernatural · Exploration

Cyber Manhunt
Shared: Simulation · Puzzle · RPG

The Mortuary Assistant
Shared: Supernatural · Singleplayer · Horror

Dread Flats
Shared: Adventure · Supernatural · Horror

Blue Prince
Shared: Puzzle · Singleplayer · Exploration

The Rewinder
Shared: Adventure · Singleplayer · Puzzle

Slime Rancher
Shared: Singleplayer · Adventure · Exploration

Firewatch
Shared: Adventure · Singleplayer · Exploration

The Séance of Blake Manor
Shared: Supernatural · Singleplayer · Puzzle

Fallout 4
Shared: Singleplayer · Adventure · Exploration

DREDGE
Shared: Exploration · Adventure · Singleplayer

The Room 4: Old Sins
Shared: Puzzle · Adventure · Singleplayer