Trigammon™ – Backgammon for Three

Trigammon is a three-player backgammon-style strategy board game concept originally developed by William Bailey and Dennis Angelica in the late 1970s. The current Trigammon project is being refined for modern tabletop and digital play, with gameplay designed to reflect the style, movement and strategy of traditional backgammon.

TrigammonX™ is the digital version of Trigammon, designed for online play, modern interfaces and optional backgammon style game variants.

Status: Prototype and development materials only. Not currently available for public access or sale. Initial development and intended release are Australia-focused. Trigammon and TrigammonX are not currently offered for sale in the United States.

Independence notice: Trigammon and TrigammonX are independent projects of William Bailey. They are not affiliated with, endorsed by, or connected to any other three-player backgammon games, variants, patents, publications or products.

More information will be released as Trigammon development continues.
Last updated: July 2026