• 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.
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.
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
Each road/port-connected city earns +1 extra star.
Japan
Bushido
Your units defend 15% better.
Mongols
The Horde
Riders and Knights cost 1 less and attack 30% harder.
Britain
Rule the Waves
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
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.
Pillar 2
World Map & City Expansion
Explore a wrapping procedural hex world map, found thriving cities, and develop tile improvements across five historical eras.