Games like High Smileson
Games like High Smileson include Morphopolis, Labyrinth City: Pierre the Maze Detective, Moncage, Big Walk, and TOEM: A Photo Adventure. We matched them by the tags players give High Smileson on Steam (Casual, Adventure, Visual Novel, Puzzle, and Exploration): closest matches first, and among equally close ones the better-known games.

Morphopolis
Shared: Puzzle · Casual · Adventure

Labyrinth City: Pierre the Maze Detective
Shared: Adventure · Casual · Puzzle

Moncage
Shared: Casual · Puzzle · Adventure

Big Walk
Shared: Puzzle · Adventure · Exploration

TOEM: A Photo Adventure
Shared: Adventure · Puzzle · Casual

Strange Jigsaws
Shared: Casual · Adventure · Puzzle

Thank Goodness You're Here!
Shared: Adventure · Casual · Exploration

Varenje
Shared: Adventure · Casual · Puzzle

Carto
Shared: Puzzle · Exploration · Adventure

The Artisan of Glimmith
Shared: Casual · Puzzle · Adventure

FEZ
Shared: Puzzle · Exploration · Adventure

Bugsnax
Shared: Adventure · Creature Collector · Exploration

Pikuniku
Shared: Adventure · Casual · Puzzle

Sanfu
Shared: Puzzle · Adventure · Visual Novel

Vampires' Melody
Shared: Casual · Visual Novel · Adventure

Chants of Sennaar
Shared: Adventure · Puzzle · Exploration

The Room
Shared: Puzzle · Adventure · Hidden Object

DAVE THE DIVER
Shared: Casual · Adventure · Exploration

Spirit of the North
Shared: Adventure · Casual · Puzzle

Whisper of the House
Shared: Casual · Puzzle · Hidden Object

The Witness
Shared: Puzzle · Exploration · Adventure

Slime Rancher
Shared: Adventure · Exploration · Casual

Gorogoa
Shared: Puzzle · Casual · Adventure

Hidden Folks
Shared: Casual · Hidden Object · Puzzle