Games like Above The Horizon
Games like Above The Horizon include Fallout 4, The Forest, No Man's Sky, The Long Dark, and Fallout: New Vegas. We matched them by the tags players give Above The Horizon on Steam (Adventure, Action, Sandbox, Exploration, and 3D): closest matches first, and among equally close ones the better-known games.

Fallout 4
Shared: Adventure · Exploration · Atmospheric

The Forest
Shared: Adventure · Action · Survival

No Man's Sky
Shared: Exploration · Adventure · Sandbox

The Long Dark
Shared: Exploration · Adventure · Atmospheric

Fallout: New Vegas
Shared: Exploration · Action · Adventure

Rust
Shared: Crafting · Adventure · Sandbox

Subnautica
Shared: Exploration · Adventure · Survival

Pacific Drive
Shared: Exploration · Adventure · Survival

Terraria
Shared: Sandbox · Adventure · Survival

Far Cry® Primal
Shared: Action · Adventure · First-Person

Rise of the Tomb Raider™
Shared: Adventure · Action · Exploration

Dune: Awakening
Shared: Exploration · Adventure · Sandbox

Grand Theft Auto V Legacy
Shared: Action · Adventure · First-Person

S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: Atmospheric · Exploration · Survival

ARK: Survival Evolved
Shared: Adventure · Survival · Crafting

Red Dead Redemption 2
Shared: Adventure · Action · Story Rich

Metro Exodus
Shared: Action · Atmospheric · Adventure

Avatar: Frontiers of Pandora™
Shared: Adventure · Action · Exploration

Sons Of The Forest
Shared: Survival · Adventure · Open World

Far Cry 3
Shared: Action · Adventure · First-Person

Far Cry® 4
Shared: Action · Adventure · First-Person

The Last Caretaker
Shared: Sandbox · Crafting · Survival

Stranded Deep
Shared: Adventure · First-Person · Exploration

Half-Life 2
Shared: Action · Adventure · Sci-fi