Somnium

Players use a goat horn to begin a ritual by performing actions in the world, and the mod's event handler watches for those activities. Once a ritual is triggered, a chain of four language models, run in sequence with constrained inputs and outputs, produces the outcome and then code that the server executes. Because the results are generated rather than fixed, the exact effect of a ritual is not known in advance, and the author notes that burning items is one example of what can happen.

The language models run through Ollama, which must be installed with the models pulled before the mod can work. The models need about 16.11 GB of storage in total, and generation is slow, so a graphics card with a modest amount of video memory is recommended, or a machine with plenty of system memory as an alternative. Players can check the Ollama server by sending a chat message after joining a world. The mod is open source under the GNU General Public License v3.0 or later, and it works in singleplayer only, since multiplayer is not officially supported yet.

Somnium is published for Forge only, with files for 1.20.1 – 1.20.6 and the latest file, 0.0.2, built for 1.20.6. It is listed in the Magic category, with Equipment and Game mechanics as secondary categories. A server running it needs every connecting player to have it too. Source code and an issue tracker are linked from the project.