Tari was a nation that was established and fell from grace many years before any of the current nations even existed. It was governed by the CPU Rei Ryghts. It fell apart when she became obsessed with her own power and influence, causing all of her followers to revolt. Planeptune was later built over the ruins of TariUltradimension.
This version of Tari exists in the Hyperdimension. The remains of its capital city were buried underneath a section of Planeptune. It is used as a weapon by Rei to shoot a laser that cuts off the top of Planeptune's Basilicom, which acted as Planeptune's communication center, effectively cutting off all attempts to call for help. It was destroyed by Neptune's Victory Slash along with a speed boost gained from Blanc and Nepgear clashing their weapons with Neptune's launching her towards the continent.
- Coincidentally, the way Tari's remains were buried in the anime resembles Atari's downfall where they buried millions of flopped Atari game cartridges in New Mexico in 1983, now unearthed on April 27, 2014. 
- ↑ Daniel Terdiman (26 April 2014). "Found! Atari's E.T. games dug up from New Mexico landfill". CNET. http://www.cnet.com/news/found-ataris-e-t-games-dug-up-from-new-mexico-landfill/. Retrieved 27 April 2014.