Games like Heavy Burden
Games like Heavy Burden include Big Walk, Outer Wilds, Riven, Slime Rancher, and Firewatch. We matched them by the tags players give Heavy Burden on Steam (Adventure, Logic, Puzzle, Choose Your Own Adventure, and Casual): closest matches first, and among equally close ones the better-known games.

Big Walk
Shared: Puzzle · Adventure · Open World

Outer Wilds
Shared: Adventure · Puzzle · Story Rich

Riven
Shared: Adventure · Puzzle · First-Person

Slime Rancher
Shared: Adventure · First-Person · Open World

Firewatch
Shared: Adventure · Story Rich · First-Person

Superliminal
Shared: Puzzle · First-Person · Adventure

Indiana Jones and the Great Circle
Shared: Puzzle · Adventure · First-Person

The Exit 8
Shared: Puzzle · First-Person · 3D

PEAK
Shared: Adventure · First-Person · 3D

Murders on the Yangtze River
Shared: Adventure · Puzzle · Story Rich

Call of the Sea
Shared: Adventure · Puzzle · First-Person

Donut County
Shared: Casual · Puzzle · Adventure

Human Fall Flat
Shared: Puzzle · Adventure · Physics

Strange Jigsaws
Shared: Adventure · Puzzle · Casual

The Witness
Shared: Puzzle · First-Person · Open World

Moncage
Shared: Puzzle · Adventure · Casual

Blue Prince
Shared: Puzzle · Adventure · First-Person

The Talos Principle 2
Shared: Puzzle · Story Rich · First-Person

The Room 4: Old Sins
Shared: Puzzle · Adventure · Story Rich

Antichamber
Shared: Puzzle · First-Person · Adventure

Hello Kitty Island Adventure
Shared: Adventure · Open World · Casual

There Is No Game: Wrong Dimension
Shared: Puzzle · Adventure · Casual

Portal 2
Shared: Puzzle · First-Person · Story Rich

RV There Yet?
Shared: Adventure · First-Person · Physics