This is LMud, a multi-user implementation of about half of Common Lisp.
It was written to act as a programming language to build Multi User Dungeons and similar software, and acts as a replacement for the Raven driver series.
To build LMud, it should be sufficient to type make run in the src/lmud/ directory of this repository. You should only need a C compiler (GCC or clang), GNU Make, and a POSIX-compatible build environment.
To connect to the system, use the protocol and port indicated by the logs in the terminal.
Press Ctrl-C to stop the execution.