Vassal Engine

Developer(s) The VASSAL Team.
Initial release 2003 (2003)
Stable release
3.2.16 / April 2, 2016 (2016-04-02)
Development status Active
Written in Java
Operating system Any
Platform Cross-platform
Available in Multilingual (English and 6 other languages)
Type Game engine
License GNU LGPLv2+

The VASSAL Engine is a game engine for building and playing online adaptations of board games, tabletop games and card games. It allows users to play in real time over a live Internet connection, and also by email (PbeM). It runs on all platforms, and is free, open-source software. For example, there is a Star Wars Miniatures module, where players can play with up to three others in a digital replica of the table-top game.

It is written in Java and is available from SourceForge under the LGPL open source license.[1]


VASSAL began as VASL (Virtual Advanced Squad Leader), an application for playing Advanced Squad Leader.[2]

Available modules

VASSAL modules exist for over 1000 games, some of which are listed here. A more comprehensive, but not exhaustive, list of modules exists on the VASSAL module site list.



Card games

In September 2008, Games Workshop issued a cease-and-desist order regarding V40k to Tim Davis, the team leader at that time.[9] The module is still played.

Games Workshop has also issued a cease-and-desist order regarding Space Hulk.


  1. Official VASSAL Website
  2. R.Flaibani. "The Master and His Vassal". Retrieved 20 April 2015.
  3. Download Source for Battlefleet Gothic Module
  4. Mordheim Module Download
  5. Warmachine&Hordes Vassal Module Download
  6. Module Shadows over Camelot Download
  7. Playing Cards
  8. Module Site
  9. GW V40k Legal Action
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