Spawn
A population of strategy genomes enters the arena. Each one is 52 weights, a stack of evolved if-then rules, and a plan for every phase of the game.
A rules-complete Catan engine for machine minds
Breed the perfect settler.
Play, simulate and evolve Catan strategies — from hand-tuned heuristic genomes to AlphaZero-style self-play. Then lose to your own creation, repeatedly.
38bots on the roster
1712top Elo rating
52strategy dimensions
0rule violations · 80k audited actions
01 — The Arsenal
Everything a bot needs
to earn its ten points
01
Play
Take a seat against the bots on a rules-complete board — every port, robber steal and dev card accounted for. Rewind any game action-by-action with ◀ ▶.
humans welcome02
Tournament
Thousand-game truths. Headless tournaments rank the roster by win rate with honest error margins; playoffs run a qualifier, then a finals among the top ten.
variance respected03
Evolution
Not vibes — selection. A 52-dimension strategy genome mutates, battles and breeds across generations, and you get a plain-English read-out of exactly what changed.
survival of the fittest04
AlphaCatan
The self-taught one. A policy-value network learns by imitation, then plays itself through PUCT search — AlphaZero-style expert iteration, checkpointed every round.
needs pytorch, brings ego05
Map Studio
Draw your own island: custom hexes, ports, fog and Seafarers waters. Save layouts, then pit any bot against your cruelest geography.
be the dungeon master06
The Ladder
Elo never lies. Persistent skill ratings for every archetype and every saved bot — and one for you. Every finished game moves the needle.
you are also ranked02 — The Method
How a champion is grown
Battle
Every genome plays dozens of full games against the field. No shortcuts — every dice roll, robber move and port trade is simulated by the real engine.
Select
Winners survive, weighted by win rate. The gauntlet re-scores champions against fixed anchor bots, so progress is real — not drift.
Mutate
Champions breed. Weights jitter, rules splice, and the next generation walks in hungrier. Leave it running overnight; wake up outclassed.
03 — The Numbers
The lab, measured
0k
actions audited after every move — resource conservation, road
connectivity, piece limits, legitimate victories
0
interpretable strategy dimensions in every heuristic genome —
no black boxes unless you ask for one
0
bots on the current roster — archetypes, evolved champions and
everything you've saved
0
highest Elo on the ladder right now — updated live from this
machine's own ladder file
To a human, Catan is dice. To a bot that has played two hundred thousand games, it's arithmetic.