Play free. No account. Offline.

Play the full base game in your browser today, with no account or install. Compete online or keep playing offline. Seafarers and Cities & Knights are free on web today. The native beta starts with the base game; Seafarers comes next.

Play Free in Your Browser Get the Native Beta

18 built-in maps6 AI tiersFree to playAd-free on web

ColonyRush browser game showing a four-player match on a hex board

Everything you need

Built for people who actually play

Opponents

Six AI tiers, from first game to brutal

Easy, Medium and Hard are free. Pro adds Godlike, Catanatron and Insane, including a neural opponent trained over sixty experiments. Pick a fight you can actually lose.

ColonyRush game setup with six AI difficulty descriptions, bot seats, and map choices — Current setup screen: bot seats, AI difficulty and map choices.

Anywhere

Play with no connection at all

Every AI tier runs on-device. On a plane, on the underground, in a dead zone — the game does not care.

ColonyRush browser game running a four-player match on a hex board — The full board runs locally in the browser.

Boards

18 built-in maps, plus your own

Play the USA map, Big Board and Black Forest, or make unlimited custom maps. In Black Forest, building beside a hidden tile reveals its terrain and number token.

ColonyRush Map Designer screen with controls to create, load, or import a custom map — Build, load or import a custom map.

Expansions

Free expansions on the web

Seafarers and Cities & Knights are free on web today. The native beta starts with the base game; Seafarers comes next.

ColonyRush Cities and Knights match showing commodities, city improvements, and knights — Cities & Knights in a live browser match.

Competition

ELO ranked matchmaking

Play rated games against people near your level and watch the number move. Win rate, history and rank all tracked.

ColonyRush leaderboard ranked by player rating — Ratings leaderboard in the current web game.

Everywhere

One account, every screen

Start in the browser, finish on your phone. Progress, stats and saved games follow you across devices.

ColonyRush game board in the browser — Play the same full board wherever you sign in.

Honest comparison

How ColonyRush stacks up

Based on publicly available information as of August 2026. Competitor pricing and features change; we re-check periodically.
Feature	ColonyRush	Colonist.io	Catan Universe
Price	Free (optional Pro)	$7–$25/month	~$6 + expansions
Native iOS & Android	Public beta	Yes	Yes
AI opponents	6 tiers, incl. neural	Multiple levels	Basic
Offline play vs AI	Yes	No	Single-player only
Seafarers	Free on web; native beta next	Paid tier	Paid
Cities & Knights	Free on web; native later	Paid tier	Paid
Map variety	18 base maps + designer	Limited	Paid scenario packs
Fog-of-war mode	Yes	No	No
ELO ranked	Yes	Yes	Season matchmaking
Discord Activity	Yes	Yes	No

Ready to play?

Start instantly in your browser, or install the native beta before the LAN party.

Play Free in Your Browser

App StoreJoin on TestFlight AndroidDownload LAN APK