Games like Ultradimensional
Games like Ultradimensional include Hello Neighbor 2, Poppy Playtime, Five Nights at Freddy's: Secret of the Mimic, Atomic Heart, and Amnesia: Rebirth. We matched them by the tags players give Ultradimensional on Steam (Action, Adventure, Strategy, Action-Adventure, and Puzzle): closest matches first, and among equally close ones the better-known games.

Hello Neighbor 2
Shared: Adventure · Puzzle · Action-Adventure

Poppy Playtime
Shared: Puzzle · Horror · First-Person

Five Nights at Freddy's: Secret of the Mimic
Shared: Adventure · Action · First-Person

Atomic Heart
Shared: Adventure · Action · Action-Adventure

Amnesia: Rebirth
Shared: Action-Adventure · Puzzle · Adventure

Little Nightmares II
Shared: Adventure · Puzzle · Horror

Bendy and the Dark Revival
Shared: Action · Adventure · First-Person

Outlast
Shared: First-Person · Horror · Atmospheric

Bendy and the Ink Machine
Shared: Puzzle · First-Person · Horror

SILENT HILL: Townfall
Shared: Adventure · Action · Horror

Hello Neighbor Alpha 4
Shared: Adventure · Strategy · Puzzle

Inside the Backrooms
Shared: Puzzle · Adventure · Horror

Escape the Backrooms
Shared: Horror · Adventure · First-Person

Garten of Banban
Shared: First-Person · Puzzle · Horror

Hello Neighbor
Shared: First-Person · Horror · Action-Adventure

Buckshot Roulette
Shared: Strategy · First-Person · Horror

Five Nights at Freddy's: Security Breach
Shared: Horror · First-Person · Adventure

Rise of the Tomb Raider™
Shared: Action · Adventure · Action-Adventure

Outer Wilds
Shared: Adventure · Puzzle · Mystery

Backrooms: Escape Together
Shared: Horror · First-Person · Atmospheric

Darkwood
Shared: Adventure · Action · Horror

Lethal Company
Shared: First-Person · Horror · Atmospheric

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

Tomb Raider Game of the Year
Shared: Action · Adventure · Action-Adventure