Games like MareScape
Games like MareScape include LIMBO, Hollow Knight, Rain World, Rogue Legacy 2, and GRIS. We matched them by the tags players give MareScape on Steam (Stylized, Perma Death, Arcade, Platformer, and Atmospheric): closest matches first, and among equally close ones the better-known games.

LIMBO
Shared: Platformer · Atmospheric · Adventure

Hollow Knight
Shared: Platformer · Atmospheric · 2D

Rain World
Shared: Atmospheric · Platformer · Survival

Rogue Legacy 2
Shared: Arcade · Platformer · Adventure

GRIS
Shared: Atmospheric · Platformer · Adventure

Cairn
Shared: Stylized · Atmospheric · Adventure

Vampire Survivors
Shared: Roguelite · Arcade · 2D

Night in the Woods
Shared: Stylized · Atmospheric · Adventure

Dead Cells
Shared: Adventure · Roguelite · Platformer

Nubby's Number Factory
Shared: Arcade · Stylized · Surreal

To The Core
Shared: Arcade · Casual · Adventure

Hollow Knight: Silksong
Shared: Platformer · 2D · Indie

BEEP
Shared: Platformer · Adventure · 2D

Don't Starve
Shared: Perma Death · Adventure · Survival

Gorogoa
Shared: Atmospheric · Stylized · Casual

Deadlight
Shared: Platformer · Atmospheric · Adventure

Spelunky
Shared: Platformer · Arcade · Perma Death

Ori and the Will of the Wisps
Shared: Platformer · Atmospheric · Adventure

ALTF4
Shared: Arcade · Platformer · Survival

Neva
Shared: Platformer · Atmospheric · Adventure

Creaks
Shared: Atmospheric · Stylized · Surreal

Journey
Shared: Atmospheric · Adventure · Stylized

Nihilumbra
Shared: Platformer · Adventure · Atmospheric

Brothers - A Tale of Two Sons
Shared: Atmospheric · Adventure · Indie