Games like H+H=H2
Games like H+H=H2 include Baba Is You, Unpacking, Zup! S, OneShot, and A Little to the Left. We matched them by the tags players give H+H=H2 on Steam (Puzzle, Sokoban, Solitaire, 2D, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Baba Is You
Shared: Puzzle · Sokoban · Pixel Graphics

Unpacking
Shared: Puzzle · Cute · Pixel Graphics

Zup! S
Shared: Puzzle · 2D · Casual

OneShot
Shared: Pixel Graphics · Puzzle · Cute

A Little to the Left
Shared: Puzzle · Cute · Casual

Patrick's Parabox
Shared: Puzzle · Sokoban · 2D

FEZ
Shared: Puzzle · Pixel Graphics · Indie

Is This Seat Taken?
Shared: Puzzle · Cute · Casual

There Is No Game: Wrong Dimension
Shared: Puzzle · Pixel Graphics · Indie

Zup!
Shared: Puzzle · 2D · Casual

inbento
Shared: Puzzle · Cute · 2D

Zup! 2
Shared: Puzzle · 2D · Casual

Zup! F
Shared: Puzzle · 2D · Casual

Zup! X
Shared: Puzzle · 2D · Casual

Void Stranger
Shared: Puzzle · Sokoban · 2D

Sticky Business
Shared: Casual · Cute · Puzzle

Zup! 3
Shared: Puzzle · 2D · Casual

Changed
Shared: Puzzle · Cute · Pixel Graphics

Carto
Shared: Puzzle · Cute · Indie

Zup! 5
Shared: Puzzle · 2D · Casual

Zup! 6
Shared: Puzzle · 2D · Casual

About Love, Hate and the other ones
Shared: Sokoban · Puzzle · Casual

Papers, Please
Shared: Pixel Graphics · Puzzle · Indie

The Last Campfire
Shared: Puzzle · Cute · Indie