Games like Seven Days
Games like Seven Days include Firewatch, What Remains of Edith Finch, Slime Rancher, Outer Wilds, and Journey. We matched them by the tags players give Seven Days on Steam (Adventure, Casual, Exploration, Nature, and Mystery): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Adventure · Mystery · Walking Simulator

What Remains of Edith Finch
Shared: Adventure · Mystery · Exploration

Slime Rancher
Shared: Adventure · Exploration · Casual

Outer Wilds
Shared: Exploration · Adventure · Mystery

Journey
Shared: Adventure · Exploration · Walking Simulator

The Witness
Shared: Exploration · First-Person · Adventure

A Short Hike
Shared: Adventure · Exploration · Casual

Quern - Undying Thoughts
Shared: Adventure · Exploration · Mystery

Submerged
Shared: Exploration · Nature · Walking Simulator

Big Walk
Shared: Exploration · Adventure · Casual

The Forgotten City
Shared: Adventure · Exploration · Mystery

The Long Dark
Shared: Exploration · Adventure · First-Person

Riven
Shared: Adventure · Exploration · Mystery

DEATH STRANDING DIRECTOR'S CUT
Shared: Walking Simulator · Adventure · Exploration

DREDGE
Shared: Exploration · Adventure · Mystery

Cairn
Shared: Exploration · Adventure · Stylized

CARIMARA: Beneath the forlorn limbs
Shared: Adventure · Exploration · Mystery

Fallout 4
Shared: Exploration · Adventure · Open World

Obduction
Shared: Adventure · Exploration · Mystery

Flower
Shared: Casual · Adventure · Nature

The First Tree
Shared: Adventure · Exploration · Walking Simulator

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

Lushfoil Photography Sim
Shared: Exploration · Nature · Walking Simulator

ABZU
Shared: Exploration · Adventure · Casual