Games like House Party 8
Games like House Party 8 include Firewatch, What Remains of Edith Finch, The Exit 8, Scanner Sombre, and The Painscreek Killings. We matched them by the tags players give House Party 8 on Steam (Adventure, Walking Simulator, Exploration, 3D, and First-Person): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Adventure · Walking Simulator · Atmospheric

What Remains of Edith Finch
Shared: Walking Simulator · Adventure · Exploration

The Exit 8
Shared: Exploration · Walking Simulator · Horror

Scanner Sombre
Shared: Walking Simulator · Exploration · Adventure

The Painscreek Killings
Shared: Exploration · Investigation · Walking Simulator

PEAK
Shared: Adventure · Exploration · First-Person

Outer Wilds
Shared: Exploration · Adventure · Mystery

CARIMARA: Beneath the forlorn limbs
Shared: Adventure · Exploration · 3D

Riven
Shared: Adventure · Exploration · First-Person

Amnesia: A Machine For Pigs
Shared: Walking Simulator · Horror · First-Person

Quern - Undying Thoughts
Shared: Adventure · Exploration · Walking Simulator

POOLS
Shared: Walking Simulator · Exploration · Realistic

Layers of Fear (2016)
Shared: Walking Simulator · Horror · First-Person

The Vanishing of Ethan Carter
Shared: Walking Simulator · Exploration · Adventure

Fears to Fathom® - Scratch Creek
Shared: Adventure · Horror · Walking Simulator

INFRA
Shared: Exploration · Walking Simulator · Adventure

Gone Home
Shared: Walking Simulator · Exploration · First-Person

Blue Prince
Shared: Exploration · Adventure · Mystery

Psalm 5:9-13
Shared: Exploration · Walking Simulator · Horror

The Forgotten City
Shared: Adventure · Exploration · Mystery

Fears to Fathom - Woodbury Getaway
Shared: Adventure · First-Person · Walking Simulator

Fears to Fathom - Ironbark Lookout
Shared: Adventure · Exploration · Horror

The Stanley Parable
Shared: Walking Simulator · First-Person · Adventure

Journey
Shared: Adventure · Exploration · Atmospheric