Games like LifeDev
Games like LifeDev include Antichamber, Blue Prince, Fallout 4, The Witness, and Before Your Eyes. We matched them by the tags players give LifeDev on Steam (Exploration, Singleplayer, Emotional, Adventure, and First-Person): closest matches first, and among equally close ones the better-known games.

Antichamber
Shared: Exploration · First-Person · Singleplayer

Blue Prince
Shared: Exploration · Singleplayer · First-Person

Fallout 4
Shared: Singleplayer · Exploration · Adventure

The Witness
Shared: Exploration · Singleplayer · First-Person

Before Your Eyes
Shared: Emotional · Singleplayer · First-Person

Slime Rancher
Shared: Exploration · Singleplayer · Adventure

The Talos Principle
Shared: First-Person · Singleplayer · Philosophical

The Room 4: Old Sins
Shared: Adventure · Singleplayer · Point & Click

Riven
Shared: Exploration · Adventure · Singleplayer

Tainted Grail: The Fall of Avalon
Shared: Adventure · Exploration · First-Person

Superliminal
Shared: First-Person · Singleplayer · Psychological

Fallout: New Vegas
Shared: Singleplayer · Exploration · First-Person

Chants of Sennaar
Shared: Singleplayer · Adventure · Point & Click

Outer Wilds
Shared: Exploration · Adventure · Singleplayer

Monument Valley
Shared: Singleplayer · Adventure · Exploration

To the Moon
Shared: Emotional · Singleplayer · Adventure

What Remains of Edith Finch
Shared: Exploration · First-Person · Singleplayer

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

The Room
Shared: Singleplayer · Adventure · Point & Click

Supraland
Shared: Exploration · Adventure · Singleplayer

The House of Da Vinci
Shared: Exploration · Singleplayer · Adventure

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

Firewatch
Shared: Adventure · Singleplayer · Exploration

The Elder Scrolls IV: Oblivion Remastered
Shared: Singleplayer · Exploration · Adventure