Games like Ugly Mansion
Games like Ugly Mansion include Little Nightmares II, Little Nightmares, Poppy Playtime, CARRION, and Kindergarten 2. We matched them by the tags players give Ugly Mansion on Steam (Adventure, Puzzle, Mystery Dungeon, Top-Down, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Little Nightmares II
Shared: Adventure · Puzzle · Horror

Little Nightmares
Shared: Adventure · Horror · Puzzle

Poppy Playtime
Shared: Puzzle · Horror · Dark

CARRION
Shared: Pixel Graphics · Gore · Horror

Kindergarten 2
Shared: Adventure · Pixel Graphics · Puzzle

Fran Bow
Shared: Puzzle · Adventure · Horror

Lucius
Shared: Adventure · Horror · Puzzle

INSIDE
Shared: Horror · Dark · Adventure

LIMBO
Shared: Puzzle · Adventure · Indie

DISTRAINT: Deluxe Edition
Shared: Adventure · Pixel Graphics · Horror

Sally Face - Episode One
Shared: Puzzle · Adventure · Horror

Amnesia: The Dark Descent
Shared: Horror · Puzzle · Gore

Five Nights at Freddy's: Into the Pit
Shared: Adventure · Pixel Graphics · Horror

OneShot
Shared: Pixel Graphics · Puzzle · Adventure

Endacopia
Shared: Adventure · Puzzle · Horror

Pony Island
Shared: Puzzle · Pixel Graphics · Indie

The Room Three
Shared: Puzzle · Adventure · Indie

IMSCARED
Shared: Adventure · Horror · Pixel Graphics

Tales of the Black Forest
Shared: Adventure · Pixel Graphics · Horror

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

Scorn
Shared: Puzzle · Horror · Gore

FAITH: The Unholy Trinity
Shared: Pixel Graphics · Horror · Indie

Kindergarten
Shared: Pixel Graphics · Puzzle · Gore

House
Shared: Adventure · Pixel Graphics · Horror