Unimperium
Town
Your town, building by building
Every building stands on the map with its level over its roof. It is where you check on a city and open the window that runs each building.
Free browser strategy · ancient Rome
One town to start. Build it up, arm it, grow it into a province.
Unimperium is a city-building strategy game you play in the browser. Your town produces around the clock, even while you are away. Spend what it makes on new works, trade what you have too much of, raise legions, and take the towns of Latium one by one.
Play free ↗ Nothing to install · guests welcome
At a glance
Genre Strategy · city builder
Platform Any web browser
Price Free to play
Setting Latium, Roman Republic
The game loop
- I
Produce
Lumber camps, quarries and iron mines fill the warehouse around the clock, and living quarters grow the people every work and recruit draws on.
- II
Build
Order upgrades in the Curia. The cost is paid up front, the work joins the build queue, and each level takes longer than the last.
- III
Trade
A town with a market swaps 2 of one good for 1 of another, delivered half an hour later. Short of iron? Pay in timber, and plan ahead.
- IV
Conquer
Drill troops in the Castra, put a consul at their head and march. One won battle annexes the town, buildings and all.
The windows you play in
Curia
City works
Every building in the town on one list, with what the next level costs and how long it takes. The Curia also trains the consuls your armies march under.
Castra
Garrison and drill
Velites and equites first; legionaries, ballistae, scouts and spies once the town’s collegium has studied them. Recruits drill one at a time.
Campaign
The map of Latium
Every town on the map, whose it is and what you know of its garrison. Pick a target, weigh the odds and send an army; the standings sit underneath.
The codex
Every number, tab by tabBuildings
10 buildings, 20 levels each
What every work costs, how long it takes and what it gives back, level by level.
Open buildings →Troops
6 troops and the consuls who lead them
Power, drill time and cost for every recruit, and how marches and battles work.
Open troops →Research
6 advances, studied town by town
What each advance costs in the collegium, and what it lets the town do.
Open research →Worlds
Solo, public and private worlds
Play alone as a guest, join a public season, or rent a world for your friends.
Open worlds →Behind the windows
Always running
Your town works while you are away
Production, building and training run on the world’s clock, so an empire keeps working with the tab closed, and armies arrive and fight on time even when every player is offline.
Tabularium
A record of your reign
Every finished work, advance, recruit and march is filed in the Tabularium, and every battle gets a war report dated in years AUC, so you can read what happened while you were gone.
Roads
Move men and goods between your towns
Troops belong to the town that drilled them. Send a column down the road to gather an army where you need it; it needs no consul. A market sends wagons of goods the same way.
Fog of war
Nobody sees everything
A rival’s garrison is known only as it was when your spies last looked, and a defender sees an attack coming but never its size.
Frequently asked
Do I need to download anything?
No. Unimperium runs in the browser, so there is no client, launcher or app store. Sign in on another device and your empire is there.
Is it free to play?
Yes. Every building, troop and advance is free, and nothing is sold that makes an empire stronger. Renting a private world is the only thing in the store.
Can I play without an account?
Yes. Continue as a guest and you get a solo world: your own town and 11 neutral towns to take, with no rivals. A guest game is tied to the browser it was started in, so create an account to keep it.
Can I play with friends?
Yes. Public worlds put several players on one map. To play only with people you know, rent a private world for up to 9 players and invite them by code or by username.
Play a public world, a solo one, or rent your own.
A guest can start a solo world with no sign-up. Private worlds let you set the march speed and choose who gets in.