Games like Epic Astro Story
Games like Epic Astro Story include Stardew Valley, SPORE™, DAVE THE DIVER, Space Haven, and My Time at Portia. We matched them by the tags players give Epic Astro Story on Steam (Simulation, RPG, Casual, Colony Sim, and Strategy RPG): closest matches first, and among equally close ones the better-known games.

Stardew Valley
Shared: RPG · Simulation · Farming Sim

SPORE™
Shared: Simulation · Colony Sim · Casual

DAVE THE DIVER
Shared: Casual · RPG · Simulation

Space Haven
Shared: Colony Sim · Simulation · City Builder

My Time at Portia
Shared: RPG · Simulation · Casual

Touhou Mystia's Izakaya
Shared: Simulation · Casual · RPG

Dungeon Village 2
Shared: Simulation · RPG · Casual

Prison Architect
Shared: Simulation · Colony Sim · City Builder

Oxygen Not Included
Shared: Colony Sim · Simulation · 2D

Two Point Museum
Shared: Simulation · Casual · City Builder

Fields of Mistria
Shared: RPG · Simulation · Farming Sim

Banished
Shared: Simulation · Colony Sim · City Builder

Clanfolk
Shared: RPG · Simulation · Farming Sim

High Sea Saga DX
Shared: Simulation · RPG · Casual

Littlewood
Shared: Simulation · RPG · City Builder

Elite Dangerous
Shared: Simulation · Space Sim · Exploration

Sword and Fairy Inn 2
Shared: Simulation · Casual · RPG

Luma Island
Shared: Simulation · Casual · Farming Sim

Cities: Skylines
Shared: Simulation · City Builder · Strategy

Dream Town Island
Shared: Simulation · Casual · Colony Sim

Little Witch in the Woods
Shared: Simulation · Casual · RPG

RimWorld
Shared: Colony Sim · Simulation · Strategy

Little-Known Galaxy
Shared: RPG · Casual · Farming Sim

Kerbal Space Program
Shared: Simulation · Space Sim · Space