Illsveil Prison

Illsveil Prison (also called Illsveil Prison Island, Illsveil Prison Isle and just Illsveil) is a dungeon featured throughout the Wild Arms series.

Wild Arms 4
Illsveil acts as the final dungeon of Wild Arms 4. The party reaches this level just after witnessing the death of Gawn Brawdia, who gave his life protecting their craft from 11 missles launched at them from Lambda, who just happened to be on Illsveil. The player must face many puzzles, monsters known as Wild ARMs, and the final few bosses of the game, Farmel, Lambda, and Hauser, the ultimate final boss, having merged with The Divine Weapon.