;Mechcity is the central region of TOME, a bustling concrete jungle for both socializing and gaming. Battles can only take place in specified areas and if a challenge is accepted mutually by two or more players.
;Mechcity is a largely urban environment, populated with large skyscrapers, shops, and cafes, where players can interact socially and away from the fray of battle. It also has docks and warehouses on each side of the city, for unknown purposes.
- Nylocke is known to dislike ;Mechcity as he has trouble navigating through it.