The Underverse Arena is an unauthorized Shadowverse venue featured in Shadowverse: Champion's Battle.
Description[]
The Underverse Arena is an underground space that is accessed through the back alleys of Nekome City. It is said that it tends to attract veteran players who are no longer satisfied with officially sanctioned matches.
The facility is divided into three levels, each with a champion. To advance from one level to another, you must earn enough Umbra Coins in battles against players of that level and then defeat the champion. 1500 Umbra Coins are required in the first level, 3500 in the second and 5000 in the third.