Ninja Forts are structures which can be found all over Asoumiranz. There are heavily fortified ones in forests, deserts, and in the mountains; There are also Ninja Forts in cities, but these are more secretive, typically in the basements of buildings, inside Paperwork Labyrinths, in sewers, or, more uncommonly, on high up, unlisted floors of skyscrapers. Ninja Forts generally only have one main entrance, which is designed to be easily defended. They also have a number of secret exits. Ninja Organisations may own one or more Forts, depending on how prestigious they are. Ninja Organisations take on commissions from other groups who need their services. Clients include Governments, criminals, religious institutions, companies, clondocks, as well as wealthy, private people.