Games like Ending It Today
Games like Ending It Today include Poppy Playtime, Portal 2, MiSide, Portal, and Outer Wilds. We matched them by the tags players give Ending It Today on Steam (3D Platformer, Psychological Horror, Singleplayer, Simulation, and First-Person): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Singleplayer · First-Person · Puzzle

Portal 2
Shared: Singleplayer · First-Person · Puzzle

MiSide
Shared: Psychological Horror · Singleplayer · First-Person

Portal
Shared: 3D Platformer · Puzzle · Singleplayer

Outer Wilds
Shared: Exploration · Mystery · Singleplayer

No, I'm not a Human
Shared: Psychological Horror · Singleplayer · First-Person

Garten of Banban
Shared: Singleplayer · Psychological Horror · First-Person

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

Blue Prince
Shared: Puzzle · Singleplayer · Exploration

Firework
Shared: Psychological Horror · Puzzle · Singleplayer

Layers of Fear (2016)
Shared: Psychological Horror · Singleplayer · First-Person

SOMA
Shared: Psychological Horror · Atmospheric · Singleplayer

The Witness
Shared: Puzzle · Singleplayer · First-Person

In Sound Mind
Shared: Psychological Horror · Puzzle · Singleplayer

Five Nights at Freddy's
Shared: Singleplayer · Psychological Horror · First-Person

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

Mirror's Edge™
Shared: 3D Platformer · First-Person · Singleplayer

A Story About My Uncle
Shared: Singleplayer · First-Person · 3D Platformer

Firewatch
Shared: Singleplayer · First-Person · Atmospheric

Resident Evil 7 Biohazard
Shared: Singleplayer · First-Person · Psychological Horror

Outlast
Shared: Psychological Horror · First-Person · Singleplayer

Garten of Banban 2
Shared: Singleplayer · Psychological Horror · First-Person

The Room Two
Shared: Puzzle · Mystery · Singleplayer

September 7th
Shared: Psychological Horror · 3D Platformer · First-Person

