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Create the biggest empire by owning roads and castles without forgetting to attack other players. This builder placement game allow you to evolve your builders to a powerfull army and can be played up to 4 players on the same computer.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
How it worksTracked since Jul 7, 2026.
Steam Train Fest ends
Official stores with direct support.
Warning: This game can only be played in Iron Mode (no save feature available).
We're just two friends who share a love for games and a have bit of madness for creating our own. We're fully independent, without a studio or big resources.
We’ve put our hearts into this experience and hope you’ll enjoy it.
The purpose of the game is to control the biggest empire. You will need to build castles and establish trade routes or steal other players hard work.
This builder placement game allows you to evolve your builders.
Choose your strategy using the 8 different builder classes, to make a powerful army or train mages and win with cunning.
Multiplayer up to 4 players on the same computer.
In the year 476, the invasion of Rome by the Germanic tribes is inevitable.
The Western Roman Empire is in decline. The Patricians fled, and for a brief moment, silence reigns in the ATRIUM. This room where they use to gather and feast was specially designed to play a strategy game.
A game inspired by the construction of Theodosian walls featuring cities similar to later European castles. it's at this moment before the sac of Rome and in this symbolic place that the period of the Middle Ages begins.
Playable Up to 4 Players.
Play against 3 strong AI
Evolve your legionary with 6 differents classes
Take control of roads and castles
Attack your ennemies territories
Customize entirely your game
A peacefull ATRIUM
Amazing music made by Réno
Lowest tracked price: £1.94 (Jul 7, 2026) · current best: £1.94.
83% positive reviews all-time.
Right now the cheapest offer for ATRIUM is £1.94 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for ATRIUM is £1.94 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
Create a free price alert on this page and KingsPrice will email you when ATRIUM drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
