Core 2650 is an addictive sci-fi roleplaying MUD. It really breaks the mold in a lot of areas. Instead of killing monsters, the primary source of income is mining for valuable metals. No Klingons are found in the colony; instead, unique races have been created, including the slow-minded, Yeti-like vaurgch and lazy reptillian gorbu. Also, coders often hold special events, such as invasions, trade shows, and fires in the domes.

The economy is primarily driven by players, who can own their own businesses, as well as hire other players to work for them. There are no NPC shopkeepers here. Core 2650 also has a very good auction system, which players and coders can use to sell a large variety of items.