Keystone Dimension is the name given to the home dimension of the characters in Chrono Trigger. It is the reality that was created when Crono and his friends traveled through time and defeated Ozzie in the Middle Ages, subdued the Reptites in prehistoric times, thwarted Queen Zeal's plans, and defeated Lavos, thus preventing the Day of Lavos from coming to pass. This dimension was eventually split in two when Kid saved Serge from drowning in 1010 AD. In 1020 AD, when Serge uses the Chrono Trigger to save Schala from the Time Devourer in the Darkness At the End of Time, the dimensions are reunited once more.
|Chrono Cross Locations|
|Dimensions||Home World | Another World|
|Locations||Arni | Bend of Time | Cape Howl | Chronopolis | Darkness Beyond Time | Dead Sea | Death's Door | Divine Dragon Falls | Dragon King Palace | Earth Dragon Isle | El Nido Triangle | Fossil Valley | Forbidden Island | Fort Dragonia | Gaea's Navel | Guldove | Hermit's Hideaway | Hydra Marshes | Isle of the Damned | Lizard Rock | Lucca's House | Marbule | Mount Pyre | Nadia's Bell | Opassa Beach | Pearly Gates | S.S. Invincible | S.S. Zelbess | Sea of Eden | Shadow Forest | Sky Dragon Isle | Temporal Vortex | Termina | Terra Tower | Viper Manor | Viper Manor Bluffs | Water Dragon Isle|