Games like Pax Romana: Romulus
Games like Pax Romana: Romulus include Stardew Valley, My Time at Portia, Graveyard Keeper, Forager, and Sun Haven. We matched them by the tags players give Pax Romana: Romulus on Steam (Farming Sim, Early Access, Adventure, RPG, and Indie): closest matches first, and among equally close ones the better-known games.

Stardew Valley
Shared: Farming Sim · RPG · Pixel Graphics

My Time at Portia
Shared: Farming Sim · RPG · Adventure

Graveyard Keeper
Shared: RPG · Indie · Pixel Graphics

Forager
Shared: Farming Sim · Indie · Adventure

Sun Haven
Shared: Farming Sim · RPG · Adventure

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

鬼谷八荒 Tale of Immortal
Shared: RPG · Singleplayer · Mythology

I Am Future: Cozy Apocalypse Survival
Shared: Farming Sim · RPG · Singleplayer

Terraria
Shared: Adventure · Sandbox · Pixel Graphics

Coral Island
Shared: Farming Sim · RPG · Agriculture

DAVE THE DIVER
Shared: Adventure · Pixel Graphics · RPG

Fields of Mistria
Shared: Farming Sim · RPG · Pixel Graphics

Clanfolk
Shared: Farming Sim · RPG · Agriculture

Farmer's Dynasty - Final Harvest Edition
Shared: Farming Sim · RPG · Early Access

Sands of Salzaar
Shared: RPG · Adventure · Indie

Travellers Rest
Shared: Farming Sim · RPG · Pixel Graphics

Heartbound
Shared: Adventure · RPG · Early Access

Don't Starve
Shared: Adventure · Indie · Singleplayer

Welcome to Elderfield
Shared: Farming Sim · RPG · Adventure

To the Moon
Shared: Indie · Adventure · RPG

Dinkum
Shared: Farming Sim · Agriculture · RPG

Assassin's Creed® Odyssey
Shared: RPG · Mythology · Singleplayer

Black Myth: Wukong
Shared: RPG · Mythology · Adventure

Tales of the Black Forest
Shared: RPG · Adventure · Indie