IMPERATIS
• Turn-Based 4X Strategy •

IMPERATIS

Rule the World Across Five Historical Eras

Build an empire for free against a full-strength standard AI — explore a wrapping procedural world, found thriving cities, research a vast tech tree across five eras, command diverse armies, and negotiate with rival civilizations.

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Choose Your Challenge

Free to Rule. Premium to Face the Toughest Opposition.

The complete single-player game is free. Upgrade only when you want Jev strategic intelligence or a human rival.

Jev is the Very Hard AI adviser. The game computes the legal moves. Jev chooses one of those moves. The commander still gives every order.

Imperatis Free
$0 — play against up to 8 AI rivals
  • Complete single-player 4X experience
  • All civilizations, maps, eras, and victory modes
  • Standard heuristic AI through Hard difficulty
Imperatis Premium
$5/month — cancel anytime
  • Jev-powered Very Hard AI with live strategic direction
  • Online multiplayer: create, join, invite, and resume
  • Everything in the free game
Rival Civilizations & AI Diplomacy

Forge Alliances or Battle Board-Aware Warlords

18 historical civilizations with distinct mechanical traits. Rivals read the live board to expand, bargain and declare war — and every difficulty runs that same heuristic on the same economy you have, with no extra income and no fog advantage.

Rome (All Roads Lead to Rome)
Rome
All Roads Lead to Rome
FRIENDLY • ALLY
Each road/port-connected city earns +1 extra star.
Japan (Bushido)
Japan
Bushido
NEUTRAL • WATCHFUL
Your units defend 15% better.
Mongols (The Horde)
Mongols
The Horde
FURIOUS • THREAT
Riders and Knights cost 1 less and attack 30% harder.
Britain (Rule the Waves)
Britain
Rule the Waves
SUBDUED • DEFENSIVE
An island power: your capital earns +2 stars a turn, and your warships are +1 harder to sink.
Strategic Depth Across 5 Eras

Gameplay Pillars

Choose Your Civilization
Pillar 1
Choose Your Civilization
Pick from 18 historical civilizations, each with its own capital and mechanical trait, then set the map type, map size, rival count, difficulty and victory condition before the first turn.
World Map & City Expansion
Pillar 2
World Map & City Expansion
Explore a wrapping procedural hex world map, found thriving cities, and develop tile improvements across five historical eras.