Games like Delta Z. INC
Games like Delta Z. INC include Outer Wilds, The Exit 8, Breakout 13, Blue Prince, and Five Nights at Freddy's: Security Breach. We matched them by the tags players give Delta Z. INC on Steam (Exploration, Immersive Sim, Puzzle, Interactive Fiction, and Strategy): closest matches first, and among equally close ones the better-known games.

Outer Wilds
Shared: Exploration · Puzzle · Story Rich

The Exit 8
Shared: Exploration · Puzzle · Immersive Sim

Breakout 13
Shared: Exploration · Interactive Fiction · Immersive Sim

Blue Prince
Shared: Exploration · Puzzle · First-Person

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

Amanda the Adventurer
Shared: Puzzle · First-Person · Horror

Killer Frequency
Shared: Puzzle · Interactive Fiction · Horror

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

Prey
Shared: Immersive Sim · Exploration · Horror

Inside the Backrooms
Shared: Puzzle · Horror · Exploration

THE 4 SINS
Shared: Puzzle · Horror · Immersive Sim

CARIMARA: Beneath the forlorn limbs
Shared: Exploration · 3D · Horror

Buckshot Roulette
Shared: Strategy · First-Person · Horror

Shipwrecked 64
Shared: Puzzle · Exploration · Horror

The Talos Principle 2
Shared: Puzzle · Exploration · First-Person

SOMA
Shared: Exploration · Horror · Story Rich

Inscryption
Shared: Puzzle · Horror · Story Rich

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

INFRA
Shared: Exploration · Puzzle · First-Person

Event[0]
Shared: Exploration · Interactive Fiction · Puzzle

Mandate Of Heaven
Shared: Puzzle · Strategy · Immersive Sim

Lethal Company
Shared: Exploration · First-Person · Horror

Myst
Shared: Exploration · Puzzle · First-Person

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