As promised, Cambragol has marked the 40th anniversary of the release of Ultima 4 with the launch of the most extensive Ultima 4 mod ever: Threat of the Trinity.

Threat of the Trinity adds several new and expansive quests to Ultima 4, with the peace and safety of Britannia hanging in the balance. Britannia now boasts nearly twice as many dungeons, ranging from straightforward cave systems to sophisticated and difficult crypts, packed with traps and puzzles. And it’s not just dungeons; you’ll find more than double the number of explorable points of interest as compared to the original game. The opportunities for exploration — and for rewards — are nearly endless.

You can download Threat of the Trinity from Cambragol’s website, or from the mod’s project entry here at the Codex.