While these computer environments implement a limited and constrained world, they allow in it many humans. Very close to basic role-playing games. Instead of living the whole adventure only in imagination, you actually also walk, talk, and sometimes fight through it. A set of conventions permit the use of magic, and safe fights. Some game systems put the emphasis on figurines, dioramas, and tactical situations rather than adventure and human situations.
Some people spend a lot of time painting their figurines into works of art.
The interest is with strategy and tactics in fictitious or historic battles. Uses paper counters, or armies of painted figurines on paper maps or elaborate dioramas.