Games like Voyager-19
Games like Voyager-19 include Outer Wilds, No Man's Sky, Prey, Cosmoteer: Starship Architect & Commander, and Starfield. We matched them by the tags players give Voyager-19 on Steam (Horror, Space, Sci-fi, Retro, and Singleplayer): closest matches first, and among equally close ones the better-known games.
Outer Wilds
Shared: Space · Exploration · Puzzle
No Man's Sky
Shared: Space · Sci-fi · Exploration
Prey
Shared: Sci-fi · Space · Horror
Cosmoteer: Starship Architect & Commander
Shared: Sci-fi · Space · Singleplayer
Starfield
Shared: Space · Sci-fi · Singleplayer
SOMA
Shared: Horror · Sci-fi · Exploration
Elite Dangerous
Shared: Space · Sci-fi · Space Sim
ROUTINE
Shared: Sci-fi · Singleplayer · Horror
Dead Space
Shared: Horror · Space · Sci-fi
Firework
Shared: Horror · Puzzle · Singleplayer
Dead Space (2008)
Shared: Horror · Sci-fi · Space
Observation
Shared: Space · Horror · Sci-fi
Moons of Madness
Shared: Horror · Sci-fi · Space
Stray
Shared: Singleplayer · Exploration · Horror
Alien: Isolation
Shared: Horror · Sci-fi · Space
Deliver Us The Moon
Shared: Space · Sci-fi · Singleplayer
Poppy Playtime
Shared: Horror · Singleplayer · Puzzle
Subnautica
Shared: Horror · Exploration · Singleplayer
COCOON
Shared: Exploration · Puzzle · Singleplayer
The Swapper
Shared: Sci-fi · Space · Puzzle
Little Nightmares II
Shared: Horror · Singleplayer · Puzzle
Endless Sky
Shared: Space · Sci-fi · Singleplayer
Hardspace: Shipbreaker
Shared: Space · Sci-fi · Singleplayer
The Callisto Protocol™
Shared: Horror · Sci-fi · Space