Games like OMEGA: The Beginning - Episode 1
Games like OMEGA: The Beginning - Episode 1 include The Room, Chants of Sennaar, The Room Two, Firewatch, and There Is No Game: Wrong Dimension. We matched them by the tags players give OMEGA: The Beginning - Episode 1 on Steam (Adventure, Indie, Point & Click, Episodic, and Stylized): closest matches first, and among equally close ones the better-known games.

The Room
Shared: Point & Click · Adventure · Indie

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

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

Firewatch
Shared: Adventure · Atmospheric · Indie

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

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

Sally Face - Episode One
Shared: Indie · Adventure · Dark

Gorogoa
Shared: Indie · Point & Click · Adventure

Kentucky Route Zero: PC Edition
Shared: Adventure · Point & Click · Indie

Broken Age
Shared: Adventure · Point & Click · Indie

Fran Bow
Shared: Point & Click · Adventure · Indie

Deponia
Shared: Adventure · Point & Click · Indie

The White Door
Shared: Adventure · Indie · Point & Click

What Remains of Edith Finch
Shared: Adventure · Atmospheric · Indie

Rusty Lake Paradise
Shared: Indie · Point & Click · Adventure

Strange Horticulture
Shared: Dark · Point & Click · Adventure

Servant of the Lake
Shared: Adventure · Point & Click · Indie

Little Nightmares
Shared: Adventure · Indie · Atmospheric

Samsara Room
Shared: Indie · Adventure · Point & Click

Detention
Shared: Indie · Adventure · Atmospheric

Donut County
Shared: Indie · Adventure · Funny

Tales from the Borderlands
Shared: Adventure · Episodic · Point & Click

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

Journey
Shared: Adventure · Indie · Atmospheric