Live Catan advisor for colonist.io. Move recs, robber & dev-card timing, opponent card tracking, post-game analysis. Local-only.
Users
55
+18 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#99K
#88K among extensions
Version
0.49.0
updated 8 Jun 2026
Users
monthly, 5 months
Latest, 12 Nov 2026:55 usersMove the mouse over the chart for any month
Ratings count
monthly, 5 months
Latest, 12 Nov 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About CatanBot: Colonist HUD
Replace the whole field with this (it has the new card-tracking bullet, the updated robber line, and the corrected HOW IT RUNS):
CatanBot is a side-panel HUD for colonist.io that runs alongside
your Catan game and surfaces decision-support information in real
time, the way a chess engine's analysis bar sits next to a chess
board.
WHAT IT DOES
• Opening picks · ranks every legal corner for both your 1st and
2nd settlement using complement-aware production scoring,
port adjacency, denial value, and resource diversity. Pairs
each pick with a follow-up road suggestion.
• In-game recommendations · top-N action ranking with score
breakdowns. Settlement, city, road, dev card, port trade,
player-trade proposal. Each rec carries a 1-ply lookahead
delta showing how much better the bot's pick is than the
alternative.
• Dev-card play hints · Knight, Monopoly, Year of Plenty, Road
Building each get a typed PLAY/HOLD verdict with conversational
reasoning ("an opp is close to Largest Army · play to deny",
"robber's on you · play to clear it").
• Robber & 7-roll telemetry · top robber targets ranked by
blocking value × victim VP × hand size × resource scarcity,
and a suggested victim that weighs which player is likeliest
to hand you a card you need or to be hiding a victory point.
Auto-detects colonist's optional Friendly Robber rule.
• Opponent card tracking · deduces each opponent's hand from
the public game log (production, builds, trades, steals,
monopolies, discards), shown per resource as a guaranteed
count plus the odds of more ("wood 2 +67%"). It branches on
hidden steals, prunes hypotheses a player could not afford,
and stays anchored to colonist's own card counts, so a
refresh or a missed line self-heals instead of drifting.
• Strategy archetype tracker · once your opening settlements
land, the bot detects which archetype you're playing
(Ore-Wheat-Sheep, Longest Road rush, Port trader, Road
Builder, or Balanced) and biases its recommendations
accordingly. Mid-game pivot triggers (hot numbers, dev cards
drawn, opponents closing on Largest Army) keep the strategy
responsive.
• Live HUD · roll histogram with 36-roll baseline, eval
sparkline (chess-style position graph), per-build
move-quality grading, per-opponent hand read, production
rate.
• Variant board support. Runs on the weekly-rotation variants
too: the Pond and Twirl layouts, the Gold Rush fog board, and
the Volcano gold-and-fog map, not just the standard board.
• Auto-postmortem · when a game ends, a self-contained HTML
report opens automatically: winner, final VP breakdown, dice
fairness, hand dynamics, trade quality, 7-roll impact, and
the full game-progression charts.
PRIVACY
CatanBot is local-only. The extension talks to a Python bridge
running on your own machine at 127.0.0.1:8765 and nothing else.
Your colonist.io game data never leaves your computer.
HOW IT RUNS
CatanBot pairs the extension with a small companion app that
runs the advisor on your own machine. Install the extension,
then download the one-click CatanBot app for macOS or Windows,
linked right from the panel when no bridge is detected. Launch
it once and the extension finds it automatically and lights up
the HUD. Nothing to configure. Linux users can run the
open-source Python bridge from source (Python 3.11+).
WHAT IT IS NOT
CatanBot is a decision-support tool, not an autoplay bot. It
reads the game (via the colonist DOM and WebSocket frames) and
shows recommendations. It does not click for you, it does not
interact with colonist's game state, and it does not bypass any
game rules. Every action still happens through your own clicks.
Think of it as a chess-engine analysis bar in a side panel.
OPEN SOURCE
GPL-3.0. Full source on GitHub. Issues and contributions welcome.