The World Tamers Handbook is a Traveller: The New Era sourcebook as well as several adventure campaigns built around the theme of rebuilding shattered worlds.

As a sourcebook, WTH provides referees with expanded or new information on the following subjects:

    A playable planetary economic model, including agriculture, raw materials, and industrial components, fully interlinked with the characteristics of planetary environment

    Star and planetary system generation and detailing

    Expanded planetary survey rules that mate with the planetary economic model, allowing players to seek out worlds suited for habitation and development

    Rules for acclimatization to new environments

    Battalion-level mass combat rules, allowing the resolution of large-scale combat in Traveller

    Archaic weapons design sequences including black powder small arms, black powder cannons, and bows

    New equipment based on the new design sequences plus three new starships suited for colonization missions