Micronation

[Tanya Shivari]

Any entity which has the appearance of being a sovereign state but isnt.
Micronations are usually created and maintained by one person or family. Many exist solely on the internet, or in the imagination of their creators. Some have a more [corporeal] existence, occupying a defined - albeit often tiny - geographical areas, and producing arefacts such as stamps, coins, banknotes, passports, medals and flags.
Micronations are generally viewed as eccentric and vaguely amusing by most external observers.
Micronations should not to be confused with microstates, which are small legitimate sovereign states such as the Vatican, Monaco, [Andorra] or [San Marino].
Nor should they be confused with legitimate self-determination or [secessionist] groups, who are typically have many hundreds or thousands of active supporters.

[Zipporah Schumaker]

While this once was a term indicating a small sovereign nations, it now refers to any group of people, or even an individual, self-proclaiming statehood under the auspices of a simulation or [roleplaying game], as a hobby, or even simply for purposes of internet socializing, most commonly by children under the age of consent.

Do not confuse a [micronation] with a sessessionist state or [Pocket State], the latter are serious political movements and groups.

[Vania]

A small [nation], usually [based on] [the Internet].