Games like Grunn
Games like Grunn include No, I'm not a Human, The Test, The Test: Hypothesis Rising, Five Nights at Freddy's: Security Breach, and The Forgotten City. We matched them by the tags players give Grunn on Steam (Horror, Multiple Endings, Choices Matter, Simulation, and Mystery): closest matches first, and among equally close ones the better-known games.
No, I'm not a Human
Shared: Horror · Choices Matter · Multiple Endings
The Test
Shared: Multiple Endings · Simulation · Choices Matter
The Test: Hypothesis Rising
Shared: Multiple Endings · Horror · Simulation
Five Nights at Freddy's: Security Breach
Shared: Horror · Multiple Endings · First-Person
The Forgotten City
Shared: Adventure · Choices Matter · Mystery
Firewatch
Shared: Adventure · Mystery · Atmospheric
Outer Wilds
Shared: Mystery · Exploration · Adventure
The Casting of Frank Stone™
Shared: Multiple Endings · Horror · Choices Matter
CARIMARA: Beneath the forlorn limbs
Shared: Horror · Mystery · Adventure
Killer Frequency
Shared: Horror · Adventure · Simulation
That's not my Neighbor
Shared: Horror · Choices Matter · Adventure
What Remains of Edith Finch
Shared: Mystery · Adventure · Exploration
Poppy Playtime
Shared: Horror · Mystery · First-Person
Until Dawn™
Shared: Horror · Choices Matter · Multiple Endings
The Dark Pictures Anthology: House of Ashes
Shared: Horror · Choices Matter · Multiple Endings
The Test: Final Revelation
Shared: Simulation · Choices Matter · Multiple Endings
Dread Fields
Shared: Horror · Multiple Endings · Farming Sim
Oxenfree
Shared: Choices Matter · Horror · Mystery
DREDGE
Shared: Exploration · Adventure · Mystery
Five Nights at Freddy's: Secret of the Mimic
Shared: Horror · Adventure · First-Person
Escape the Backrooms
Shared: Horror · First-Person · Adventure
The Forest
Shared: Horror · Adventure · First-Person
The Mortuary Assistant
Shared: Horror · Mystery · Simulation
Lethal Company
Shared: Horror · First-Person · Exploration