Quote1 We've done it, brother! According to the instruments, this "nexus realm" is a patchwork of many times and places, brimming with the primordial energy of creation itself! Quote2
-- En Dwi Gast src

The Battlerealm is a universe where time and space ceased working, apparently as a side-effect created by the large amount of unstable ISO-8 present in it.

Everyone within it is forced to fight in the "Contest of Champions", a tournament where various Summoners must use a squad of heroes and villains from throughout the Multiverse to fight other contestants through numerous battlefields cobbled from across reality. The winner of the Contest is said to receive the ISO-Sphere, a powerful artifact that is capable of rewriting reality and granting its wielder any wish.

General references