Arena Wars happened in 2004.
Arena Wars was created in 2004.
the best world to go to a duel arena the duel arena is worth less but clan wars go to a clan wars world and fight there
Legion Arena happened in 2005.
Arena of Octos happened in 1981.
Laser Arena happened in 2000.
Robot Arena happened in 2001.
Arena of Blood happened in 000.
Arena Massacre happened in 1699.
Dark Arena happened in 2002.
Nope, you have to wait till level 20 and go in random arena, and team arena.
Custom Robo Arena happened in 2006.
Battle Arena Nitoshinden happened in 1996.