Games like Soundward: The Lost Signal
Games like Soundward: The Lost Signal include Firewatch, Fallout 4, What Remains of Edith Finch, Slime Rancher, and Valley. We matched them by the tags players give Soundward: The Lost Signal on Steam (Adventure, Audio Production, Walking Simulator, Exploration, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Adventure · Walking Simulator · First-Person

Fallout 4
Shared: Adventure · Exploration · Singleplayer

What Remains of Edith Finch
Shared: Walking Simulator · Adventure · Exploration

Slime Rancher
Shared: Adventure · Exploration · Singleplayer

Valley
Shared: Adventure · Exploration · First-Person

Starfield
Shared: Singleplayer · Exploration · Sci-fi

No Man's Sky
Shared: Exploration · Adventure · Sci-fi

The Long Dark
Shared: Exploration · Adventure · Singleplayer

Fallout: New Vegas
Shared: Singleplayer · Exploration · Adventure

Kona
Shared: Adventure · Singleplayer · First-Person

Five Nights at Freddy's: Security Breach
Shared: Singleplayer · First-Person · Exploration

Outer Wilds
Shared: Exploration · Adventure · Singleplayer

ROUTINE
Shared: Singleplayer · Adventure · Sci-fi

Quern - Undying Thoughts
Shared: Adventure · Exploration · Walking Simulator

Riven
Shared: Adventure · Exploration · Singleplayer

The Witness
Shared: Exploration · First-Person · Singleplayer

PEAK
Shared: Adventure · Exploration · First-Person

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

Subnautica
Shared: Exploration · Adventure · Singleplayer

Stray
Shared: Adventure · Singleplayer · Exploration

The Stanley Parable
Shared: Walking Simulator · First-Person · Adventure

Fallout 3
Shared: Exploration · Singleplayer · Adventure

Scanner Sombre
Shared: Walking Simulator · Exploration · Adventure

POOLS
Shared: Walking Simulator · Exploration · First-Person