Games like Sol Trader
Games like Sol Trader include Kenshi, Mountain, 鬼谷八荒 Tale of Immortal, 龙胤立志传, and The Long Journey Home. We matched them by the tags players give Sol Trader on Steam (RPG, Simulation, Indie, Procedural Generation, and Strategy RPG): closest matches first, and among equally close ones the better-known games.

Kenshi
Shared: RPG · Strategy RPG · Simulation

Mountain
Shared: Simulation · Indie · RPG

鬼谷八荒 Tale of Immortal
Shared: Simulation · RPG · Indie

龙胤立志传
Shared: RPG · Simulation · Strategy RPG

The Long Journey Home
Shared: Simulation · RPG · Indie

Stardew Valley
Shared: RPG · Simulation · Indie

Kerbal Space Program
Shared: Simulation · Space · Indie

Cyber Manhunt
Shared: RPG · Simulation · Indie

Space Pirates And Zombies 2
Shared: RPG · Indie · Space

Heroes' Vow: Three Kingdoms
Shared: Simulation · RPG · Strategy RPG

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

觅长生
Shared: RPG · Indie · Simulation

Between the Stars
Shared: RPG · Simulation · Space

Graveyard Keeper
Shared: RPG · Simulation · Indie

Retirement Simulator
Shared: RPG · Simulation · Indie

Starpoint Gemini Warlords
Shared: RPG · Simulation · Space

Total War: WARHAMMER
Shared: RPG · Simulation · Strategy RPG

Starpoint Gemini 2
Shared: Simulation · RPG · Space

Warsim: The Realm of Aslona
Shared: Simulation · RPG · Procedural Generation

The Scroll of Taiwu : Beyond The Dome
Shared: RPG · Indie · Simulation

Path Of Wuxia
Shared: RPG · Indie · Simulation

Halcyon 6: Starbase Commander
Shared: Indie · RPG · Space

SpaceBourne
Shared: RPG · Simulation · Indie

Ostranauts
Shared: Simulation · Space · RPG