Games like Trigon: Space Story
Games like Trigon: Space Story include FTL: Faster Than Light, Heat Signature, Void War, Out There: Ω Edition, and Oxygen Not Included. We matched them by the tags players give Trigon: Space Story on Steam (Isometric, Roguelike, Space, Strategy, and Singleplayer): closest matches first, and among equally close ones the better-known games.

FTL: Faster Than Light
Shared: Roguelike · Space · Strategy

Heat Signature
Shared: Space · Roguelike · Strategy

Void War
Shared: Space · Strategy · Roguelike

Out There: Ω Edition
Shared: Space · Roguelike · Strategy

Oxygen Not Included
Shared: Singleplayer · Resource Management · Strategy

The Binding of Isaac
Shared: Roguelike · Difficult · Indie

Dome Keeper
Shared: Roguelike · Singleplayer · Resource Management

Dungeon of the ENDLESS™
Shared: Roguelike · Strategy · Indie

Darkest Dungeon®
Shared: Roguelike · Singleplayer · Difficult

The Long Journey Home
Shared: Strategy · Space · Roguelike

Stoneshard
Shared: Roguelike · Strategy · Singleplayer

The Binding of Isaac: Rebirth
Shared: Roguelike · Difficult · Indie

Stellaris
Shared: Space · Strategy · Singleplayer

Hades
Shared: Roguelike · Singleplayer · Indie

Crying Suns
Shared: Space · Strategy · Roguelike

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

Balatro
Shared: Roguelike · Singleplayer · Strategy

Slay the Spire
Shared: Roguelike · Strategy · Singleplayer

Homeworld 3
Shared: Space · Strategy · Singleplayer

This War of Mine
Shared: Strategy · Singleplayer · Resource Management

Tharsis
Shared: Space · Strategy · Roguelike

Slay the Spire 2
Shared: Roguelike · Strategy · Difficult

Sultan's Game
Shared: Singleplayer · Strategy · Story Rich

Terraformers
Shared: Roguelike · Space · Singleplayer