ErisMUD is a MUD/MOO server/engine written in Python and supports many features: rooms, NPCs, items, player skills and stats, ANSI colors, a help system, damage/healing, etc. SQLite is used to store the data, so no files are required for building (unlike LPMUDs). Short and easy internal commands take care of the development and maintenance.
Cosmos of Methos is a game where you are placed behind the wheel of a Hellenik Trireme, a Phoenecian trade-ship, or a Skythian pirate ship. Nevertheless, you have equal oportunity to rule your destiny -- to become a peaceful trader or a fearsome captain. After all, was Odysseus better than you?