Games like Lemonia The Last Castle
Games like Lemonia The Last Castle include The Witness, Fallout 4, Slime Rancher, Fallout: New Vegas, and The Long Dark. We matched them by the tags players give Lemonia The Last Castle on Steam (Casual, Puzzle, Exploration, First-Person, and Post-apocalyptic): closest matches first, and among equally close ones the better-known games.

The Witness
Shared: Puzzle · Exploration · First-Person

Fallout 4
Shared: Exploration · Post-apocalyptic · Open World

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

Fallout: New Vegas
Shared: Open World · Post-apocalyptic · Exploration

The Long Dark
Shared: Exploration · Open World · First-Person

Big Walk
Shared: Puzzle · Exploration · Open World

S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: Open World · Post-apocalyptic · Exploration

Antichamber
Shared: Puzzle · First-Person · Exploration

Outer Wilds
Shared: Exploration · Puzzle · Open World

Fallout 3
Shared: Post-apocalyptic · Open World · Exploration

Metro Exodus
Shared: Post-apocalyptic · Open World · Singleplayer

The Talos Principle
Shared: Puzzle · First-Person · Exploration

Moncage
Shared: Casual · Puzzle · Singleplayer

The Long Drive
Shared: Exploration · Open World · Post-apocalyptic

FAR: Lone Sails
Shared: Exploration · Post-apocalyptic · Puzzle

Blue Prince
Shared: Puzzle · Exploration · First-Person

Supraland
Shared: Exploration · First-Person · Puzzle

FEZ
Shared: Puzzle · Exploration · Casual

No Man's Sky
Shared: Exploration · Open World · First-Person

Obduction
Shared: Puzzle · Exploration · First-Person

Firewatch
Shared: First-Person · Exploration · Singleplayer

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

Starfield
Shared: Open World · Exploration · Singleplayer

Poppy Playtime
Shared: Puzzle · First-Person · Singleplayer