Games like Swingularity
Games like Swingularity include No Man's Sky, Slime Rancher, Outer Wilds, Golf With Your Friends, and Starfield. We matched them by the tags players give Swingularity on Steam (Space, Golf, Procedural Generation, Exploration, and Mini Golf): closest matches first, and among equally close ones the better-known games.

No Man's Sky
Shared: Space · Exploration · Procedural Generation

Slime Rancher
Shared: Exploration · Singleplayer · Cute

Outer Wilds
Shared: Space · Exploration · Adventure

Golf With Your Friends
Shared: Golf · Mini Golf · Singleplayer

Starfield
Shared: Space · Exploration · Singleplayer

Kerbal Space Program
Shared: Space · Simulation · Singleplayer

Stellaris
Shared: Space · Exploration · Sci-fi

Golf It!
Shared: Golf · Mini Golf · Singleplayer

Cairn
Shared: Exploration · Stylized · Singleplayer

Elite Dangerous
Shared: Space · Exploration · Sci-fi

FTL: Faster Than Light
Shared: Space · Singleplayer · Procedural Generation

Stray
Shared: Exploration · Singleplayer · Adventure

Hardspace: Shipbreaker
Shared: Space · Singleplayer · Sci-fi

COCOON
Shared: Exploration · Adventure · Space

Kerbal Space Program 2
Shared: Space · Exploration · Physics

V: Rings of Saturn
Shared: Space · Exploration · Singleplayer

Deliver Us The Moon
Shared: Space · Adventure · Singleplayer

SPORE™
Shared: Space · Exploration · Simulation

Empyrion - Galactic Survival
Shared: Space · Exploration · Simulation

FAR: Lone Sails
Shared: Exploration · Singleplayer · 2.5D

SPORE™ Galactic Adventures
Shared: Space · Exploration · Adventure

Cosmoteer: Starship Architect & Commander
Shared: Space · Singleplayer · Exploration

Chants of Sennaar
Shared: Singleplayer · Adventure · Exploration

Endless Sky
Shared: Space · Singleplayer · Exploration