Games like I Promise
Games like I Promise include What Remains of Edith Finch, Firewatch, Gone Home, Until Then, and Amnesia: A Machine For Pigs. We matched them by the tags players give I Promise on Steam (Exploration, Interactive Fiction, Visual Novel, Walking Simulator, and First-Person): closest matches first, and among equally close ones the better-known games.

What Remains of Edith Finch
Shared: Walking Simulator · Exploration · Story Rich

Firewatch
Shared: Walking Simulator · Exploration · First-Person

Gone Home
Shared: Exploration · Walking Simulator · First-Person

Until Then
Shared: Visual Novel · Interactive Fiction · Story Rich

Amnesia: A Machine For Pigs
Shared: Walking Simulator · Exploration · First-Person

The Beginner's Guide
Shared: Walking Simulator · Story Rich · First-Person

Before Your Eyes
Shared: Interactive Fiction · First-Person · Story Rich

OPUS: Echo of Starsong - Full Bloom Edition
Shared: Visual Novel · Interactive Fiction · Story Rich

To the Moon
Shared: Story Rich · Interactive Fiction · Romance

Dear Esther: Landmark Edition
Shared: Exploration · Interactive Fiction · Walking Simulator

CARIMARA: Beneath the forlorn limbs
Shared: Exploration · Story Rich · Walking Simulator

Florence
Shared: Romance · Interactive Fiction · Casual

Outer Wilds
Shared: Exploration · Story Rich · Mystery

Dagon: by H. P. Lovecraft
Shared: Visual Novel · First-Person · Interactive Fiction

Road 96: Mile 0
Shared: Exploration · Interactive Fiction · Visual Novel

The Stanley Parable
Shared: Walking Simulator · First-Person · Exploration

The Hungry Lamb: Traveling in the Late Ming Dynasty
Shared: Visual Novel · Interactive Fiction · Story Rich

The Suicide of Rachel Foster
Shared: Walking Simulator · Exploration · Story Rich

Riven
Shared: Exploration · First-Person · Story Rich

Love Is All Around
Shared: Visual Novel · Romance · First-Person

Beacon Pines
Shared: Visual Novel · Exploration · Interactive Fiction

Scanner Sombre
Shared: Exploration · Walking Simulator · First-Person

INFRA
Shared: Exploration · Walking Simulator · First-Person

The Witness
Shared: Exploration · First-Person · Walking Simulator