Games like Bloomstead
Games like Bloomstead include Ib, OMORI, Stardew Valley, Undertale, and The Test. We matched them by the tags players give Bloomstead on Steam (Farming Sim, 2D, Psychological Horror, Horror, and Choices Matter): closest matches first, and among equally close ones the better-known games.

Ib
Shared: Horror · 2D · Psychological Horror

OMORI
Shared: Psychological Horror · Multiple Endings · 2D

Stardew Valley
Shared: Farming Sim · Life Sim · RPG

Undertale
Shared: Choices Matter · Multiple Endings · 2D

The Test
Shared: Psychological Horror · Multiple Endings · Choose Your Own Adventure

Darkwood
Shared: Horror · Psychological Horror · Exploration

Palia
Shared: Farming Sim · Exploration · Life Sim

OneShot
Shared: Choices Matter · 2D · Multiple Endings

No, I'm not a Human
Shared: Psychological Horror · Horror · Choices Matter

Endacopia
Shared: Psychological Horror · Horror · Exploration

Who's Lila?
Shared: Psychological Horror · Horror · Choose Your Own Adventure

The Test: Hypothesis Rising
Shared: Horror · Choices Matter · Multiple Endings

My Time at Portia
Shared: Farming Sim · Life Sim · RPG

KinitoPET
Shared: Psychological Horror · Horror · 2D

Little Misfortune
Shared: Psychological Horror · Choices Matter · Horror

Volcano Princess
Shared: Choices Matter · Multiple Endings · Life Sim

Five Nights at Freddy's: Into the Pit
Shared: Horror · 2D · Exploration

The Casting of Frank Stone™
Shared: Choices Matter · Horror · Multiple Endings

Mad Father
Shared: Psychological Horror · Horror · 2D

Fields of Mistria
Shared: Farming Sim · Life Sim · RPG

That's not my Neighbor
Shared: Horror · Choices Matter · 2D

The Henry Stickmin Collection
Shared: Multiple Endings · Choices Matter · Choose Your Own Adventure

Slay the Princess — The Pristine Cut
Shared: Psychological Horror · Choices Matter · Horror

DAVE THE DIVER
Shared: Exploration · Farming Sim · Casual