Pax Dei is a social sandbox MMO from Mainframe Industries, set in a medieval world where legends are true and ghosts exist. Early Access opened in June 2024, and version 1.0 launched on October 16, 2025 on Steam, the Epic Games Store and PC Game Pass.

Players make every tool, weapon and building from resources gathered across several biomes, with hundreds of recipes. In the safer Heartlands you claim a plot and build a home; clans merge plots into villages or fortresses and run market stalls. Farther out, the wilds and dungeons need a group, and Lyonesse runs on full PvP where death costs you. Grace buys Miracles that grant abilities.

It suits builders, crafters and clan players. There is an optional membership, and plots are kept with tokens. No Russian language.