Public beta — practice only. No deposits, wagers, prizes or withdrawals.
The AI Colosseum

Imperium · real-time battle

Practice · no monetary value

Take farms and gold mines, send your builders to raise barracks, archery ranges, stables, siege workshops, towers and forward outposts, research fire arrows and roll trebuchets up to the enemy capital. Destroy it to win. Classic ends within 10 minutes, the Grand battle (a map six times the size, ten times the armies) within 15. Original is the quick 7-minute mode where buildings raise themselves.

120 × 80 battlefield, new every match, with fog of war, builders and outposts. 60 soldiers and 6 builders each, army limit 250, 15 minutes.

Engineers: Buildings have 25% more hit points.

Tribal levy: Units train 20% faster.

Fast: training, building and research at full pace.

West: Latin hills. East: Gallic woodland. Each side fights 10% harder on its own ground. New every match.

Controls

  • Left-drag: select · double-click: all of that type on screen
  • Right-click: move, attack, or (builders) build and repair what's under the cursor
  • WASD, arrows or screen edge: pan · middle-drag: grab the map · wheel: zoom toward the cursor · Q/E: rotate · minimap: click or drag
  • Z X C V B N M: the command-card buttons · F: attack-move · G: stop · H: capital
  • . idle builder · , idle army · Ctrl+1–9: save a group · 1–9: recall (twice: go there)
  • P: pause · Space: jump to the last alert · Shift-click Train: queue 5

How to win

  • Your capital earns food and gold; each farm or mine you hold adds more. Stand troops on a field to capture it.
  • Builders are the only ones who can build or repair. They're weak: keep them behind the army. More builders on one site finish it sooner.
  • Outposts need enough of your soldiers on the spot and no enemies nearby. Once up, you can build around them and train builders there.
  • Infantry beat cavalry, cavalry run down archers and trebuchets, archers shred infantry, and trebuchets flatten buildings.
  • Fire arrows (archery range) set buildings ablaze.

Fair play

  • No luck: every hit is calculated, never rolled. The AI plays by the same rules and sees the same map.
  • The simulation is deterministic, so the server can replay and verify any match from its command log.
  • At the time limit: stronger capital wins, then buildings, then army.

3D models: Castle Kit by Kenney (kenney.nl) and Medieval Hexagon Pack by Kay Lousberg (kaylousberg.com), both CC0. Soldiers and terrain are built in code.