Games like TREE
Games like TREE include To the Moon, Assemble with Care, Gorogoa, A Bird Story, and Little Inferno. We matched them by the tags players give TREE on Steam (Free to Play, Casual, Indie, Short, and Emotional): closest matches first, and among equally close ones the better-known games.

To the Moon
Shared: Indie · Emotional · Great Soundtrack

Assemble with Care
Shared: Casual · Indie · Short

Gorogoa
Shared: Indie · Casual · Singleplayer

A Bird Story
Shared: Indie · Short · Great Soundtrack

Little Inferno
Shared: Casual · Indie · Singleplayer

Samsara Room
Shared: Indie · Free to Play · Singleplayer

Brothers - A Tale of Two Sons
Shared: Indie · Emotional · Atmospheric

Varenje
Shared: Free to Play · Indie · Casual

The Room
Shared: Singleplayer · Indie · Short

Where Winds Meet
Shared: Free to Play · Singleplayer · Casual

Flowers Blooming at the End of Summer
Shared: Indie · Casual · Visual Novel

The Beginner's Guide
Shared: Indie · Short · Singleplayer

Florence
Shared: Casual · Indie · Singleplayer

Neon Beats
Shared: Free to Play · Indie · Great Soundtrack

Papers, Please
Shared: Indie · Singleplayer · Point & Click

ABZU
Shared: Casual · Atmospheric · Singleplayer

Ultimate Custom Night
Shared: Free to Play · Singleplayer · Indie

Donut County
Shared: Casual · Indie · Short

Morphopolis
Shared: Indie · Casual · Short

Return.
Shared: Free to Play · Casual · Indie

Glass Masquerade
Shared: Casual · Indie · Singleplayer

GRIS
Shared: Indie · Great Soundtrack · Atmospheric

Zenge
Shared: Casual · Indie · Short

A Mortician's Tale
Shared: Casual · Indie · Short