Games like Nightmare (Incubo)
Games like Nightmare (Incubo) include Little Nightmares, LIMBO, Little Nightmares II, CARRION, and Fran Bow. We matched them by the tags players give Nightmare (Incubo) on Steam (Indie, Adventure, Gore, Violent, and Horror): closest matches first, and among equally close ones the better-known games.

Little Nightmares
Shared: Adventure · Horror · Indie

LIMBO
Shared: Indie · Puzzle · Adventure

Little Nightmares II
Shared: Adventure · Horror · Puzzle

CARRION
Shared: Gore · Indie · Horror

Fran Bow
Shared: Adventure · Indie · Story Rich

GRIS
Shared: Indie · Adventure · Great Soundtrack

Kindergarten 2
Shared: Adventure · Gore · Indie

INSIDE
Shared: Indie · Horror · Story Rich

Sally Face - Episode One
Shared: Indie · Story Rich · Horror

Hollow Knight
Shared: Indie · Platformer · Adventure

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

OneShot
Shared: Indie · Story Rich · Adventure

Blasphemous
Shared: Gore · Indie · Violent

Lucius
Shared: Adventure · Horror · Gore

Tales of the Black Forest
Shared: Indie · Adventure · Horror

Tiny Bunny
Shared: Horror · Story Rich · Gore

Detention
Shared: Indie · Horror · Adventure

MO:Astray
Shared: Indie · Adventure · Gore

Rusty Lake Paradise
Shared: Indie · Adventure · Puzzle

Lobotomy Corporation | Monster Management Simulation
Shared: Story Rich · Gore · Horror

Kindergarten
Shared: Gore · Violent · Adventure

DISTRAINT: Deluxe Edition
Shared: Indie · Horror · Adventure

To the Moon
Shared: Indie · Story Rich · Adventure

Seen
Shared: Indie · Adventure · Puzzle