Krikkit Wars
The Krikkit Wars were a Fictional war in the universe of Douglas Adams' The Hitchhiker's Guide to the Galaxy, as featured in the novel Life, the Universe and Everything.
The war was started by the people of planet Krikkit. For a long time their world had been entirely surrounded by a dust cloud made up of the pulverized parts of the computer Hactar. Because of this, they had been unable to see any other stars and had believed themselves to be alone in the universe; in fact they never knew there was a Universe.
Hactar wished to atone for an earlier incident in which it had been tasked with designing a weapon capable of destroying the universe for the Silastic Armorfiends, a violent and warlike race, and had developed a "Supernova Bomb" that would use a hyperspace junction to link every star in the universe and make them all go supernova simultaneously. However, it deliberately incorporated a design flaw, resulting in his being pulverized by the Silastic Armorfiends. It later realized that it was not its place to make such decisions and nurtured the Krikkiters to arrive at the same state of mind as the Armorfiends by building a spaceship, crashing it onto their planet, and subconsciously aiding them in repairing it. When the first Krikkit space pilots exited the dust cloud and discovered the entire universe, they decided it would "have to go".
In a very short time, xenophobia Overwhelmed the Krikkiters and, again unknowingly assisted by Hactar, they designed a massive fleet of battle cruisers and a huge army of deadly white robots and declared war on the rest of their galaxy. Although galactic casualties numbered about two grillion, the entire Krikkit race was eventually captured (except for one battle cruiser which was missing, presumed destroyed) and put on trial. They were sentenced by Judiciary Pag L.I.V.R (Learned, Impartial, and Very Relaxed), also known as Zipo Bibrok 5 × 108, to have their planet sealed in a Slo-Time envelope, within which time would progress almost infinitely slowly, and remain there until the end of the universe, at which point it would theoretically emerge and be the sole inhabitant of the universe. The lock would be found on an asteroid orbiting the planet just outside the envelope, while the key would be the Wikkit Gate.