Wayward is an in-development MUD (Multi-User Dungeon) based off the Evennia framework. In terms of theme, much is up in the air. Frankly, as a long-time player of MUDs, this is essentially a fun exercise to brush up on Python in an area of high familiarity. It is not a legitimate effort in game design/production/etcetera. Right now, the priority of development is in building out the base game-creation systems: builder tools around rooms, objects, and NPCs, extending Evennia's already existing toolset. In order to run it, you need to have evennia in a parent directory alongside this directory.
Evennia's documentation can be found here: https://github.com/evennia/evennia/wiki.