Games like A song in the void
Games like A song in the void include Grand Theft Auto V Legacy, Red Dead Redemption 2, Fallout 4, Valley, and We Happy Few. We matched them by the tags players give A song in the void on Steam (Adventure, Indie, Action, Music, and First-Person): closest matches first, and among equally close ones the better-known games.

Grand Theft Auto V Legacy
Shared: Action · Adventure · Open World

Red Dead Redemption 2
Shared: Adventure · Action · Open World

Fallout 4
Shared: Adventure · Singleplayer · Open World

Valley
Shared: Adventure · First-Person · Indie

We Happy Few
Shared: Adventure · Action · Indie

Slime Rancher
Shared: Adventure · Singleplayer · First-Person

Firewatch
Shared: Adventure · First-Person · Singleplayer

Thief Simulator
Shared: Singleplayer · Adventure · First-Person

Half-Life 2
Shared: Action · Adventure · Singleplayer

Far Cry 3
Shared: Adventure · Action · Open World

The Forest
Shared: Adventure · Open World · Action

Bastion
Shared: Indie · Action · Singleplayer

Far Cry® 4
Shared: Action · Adventure · Open World

Kingdom Come: Deliverance II
Shared: Adventure · Singleplayer · First-Person

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

Bully: Scholarship Edition
Shared: Adventure · Action · Singleplayer

Bendy and the Dark Revival
Shared: Action · Adventure · First-Person

Fallout: New Vegas
Shared: Singleplayer · Open World · Adventure

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

Tainted Grail: The Fall of Avalon
Shared: Adventure · First-Person · Open World

The Elder Scrolls IV: Oblivion® Game of the Year Edition (2009)
Shared: Adventure · Singleplayer · First-Person

Drug Dealer Simulator
Shared: Action · Indie · Singleplayer

Kingdom Come: Deliverance
Shared: Singleplayer · Adventure · Open World

STAR WARS Jedi: Survivor™
Shared: Action · Adventure · Singleplayer