Games like Ghostdream
Games like Ghostdream include There Is No Game: Wrong Dimension, That's not my Neighbor, Florence, The Room, and Morphopolis. We matched them by the tags players give Ghostdream on Steam (Adventure, Casual, Indie, and Point & Click): closest matches first, and among equally close ones the better-known games.

There Is No Game: Wrong Dimension
Shared: Indie · Adventure · Point & Click

That's not my Neighbor
Shared: Adventure · Casual · Point & Click

Florence
Shared: Casual · Adventure · Indie

The Room
Shared: Point & Click · Adventure · Indie

Morphopolis
Shared: Indie · Casual · Adventure

Broken Age
Shared: Adventure · Point & Click · Indie

Tick Tock: A Tale for Two
Shared: Adventure · Indie · Casual

Pikuniku
Shared: Adventure · Indie · Casual

Gorogoa
Shared: Indie · Casual · Point & Click

LUNA The Shadow Dust
Shared: Adventure · Casual · Indie

Gomo
Shared: Adventure · Indie · Point & Click

Melvor Idle
Shared: Casual · Indie · Adventure

Chants of Sennaar
Shared: Adventure · Indie · Point & Click

Iris.Fall
Shared: Adventure · Casual · Indie

Lil' Guardsman
Shared: Adventure · Casual · Point & Click

Boxes: Lost Fragments
Shared: Adventure · Point & Click · Casual

Little Misfortune
Shared: Indie · Point & Click · Adventure

Plug & Play
Shared: Indie · Casual · Adventure

Journey of a Roach
Shared: Adventure · Indie · Point & Click

Frankenstein: Master of Death
Shared: Casual · Point & Click · Adventure

Sinister City
Shared: Adventure · Casual · Indie

Chained Together
Shared: Adventure · Casual · Indie

The Room Three
Shared: Adventure · Point & Click · Indie

Old Man's Journey
Shared: Adventure · Casual · Indie