Places/Sites to Play Stratego

Playing live on the board game
This is the original format for the game. There are a number of versions, but still the most popular is the standard version of the game. See here a list of various versions/editions of the board game.

Stratego.com
Official game site by Jumbo. No longer functional as of March 2021.

Gravon
Gravon is a multi-game site that has Stratego as one of its games. It requires Java and does not have an app version. The graphics are very basic, but its features are highly customisable. There are normally very few Gravon.deplayers online, so arranging matches can be difficult.

Strategus
Online multiplayer in any modern (HTML5) web browser, desktop or mobile. Can play friendly and ranked games. Games can be watched live and replayed.

Stratego.io
Can be used for playing with a friend, but it doesn't seem like you will find a match if you don't plan with someone you know.

Legions: Strategy Warfare
Legions is a Stratego variant. The main differences are that pieces are kept revealed and it has 7 bombs (instead of six) and 3 seargents (instead of 4).

Heroic Battle
Heroic Battle is a Microsoft App and also on Android. One can play single player against the best computer bot for Stratego called Probe.

Master of the Flag
Play against a bot called Master of the Flag