Games like Bunker 2
Games like Bunker 2 include Five Nights at Freddy's: Security Breach, Lorelei and the Laser Eyes, Metel - Horror Escape, Stray, and Rise of the Tomb Raider™. We matched them by the tags players give Bunker 2 on Steam (Action, Indie, Puzzle, Exploration, and 3D): closest matches first, and among equally close ones the better-known games.

Five Nights at Freddy's: Security Breach
Shared: Horror · Singleplayer · Exploration

Lorelei and the Laser Eyes
Shared: Puzzle · Exploration · Action

Metel - Horror Escape
Shared: Indie · Puzzle · Horror

Stray
Shared: Exploration · Adventure · Singleplayer

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

Escape the Backrooms
Shared: Horror · Exploration · Action

Outer Wilds
Shared: Exploration · Puzzle · Adventure

The Room 4: Old Sins
Shared: Puzzle · Adventure · Singleplayer

Poppy Playtime
Shared: Puzzle · Horror · Singleplayer

Bendy and the Dark Revival
Shared: Action · Horror · Indie

COCOON
Shared: Puzzle · Indie · Exploration

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

The Room
Shared: Puzzle · Indie · Singleplayer

Five Nights at Freddy's: Secret of the Mimic
Shared: Action · Horror · Exploration

Summon
Shared: Action · Puzzle · Horror

The House of Da Vinci
Shared: Puzzle · Exploration · Indie

Moncage
Shared: Puzzle · Indie · Singleplayer

Little Nightmares II
Shared: Puzzle · Horror · Singleplayer

Little Nightmares
Shared: Horror · Puzzle · Indie

Deliver Us The Moon
Shared: Indie · Action · Adventure

Sizeable
Shared: Puzzle · Indie · Exploration

The Room Two
Shared: Puzzle · Indie · Horror

ANIMAL WELL
Shared: Puzzle · Exploration · Horror

Chants of Sennaar
Shared: Puzzle · Indie · Singleplayer