Sponge Dome

The Sponge Dome is the final battle Dome in the Spongeland Dimension.

Structure
The Sponge Dome, like all other final battle Domes, is massive, and can be seen from a great distance. It is made almost entirely of sponge, (other than torches, doors, and ladders). Inside is a huge battle room and a set of ladders that lead to the top of the Dome, where a Venturechest containing Portal supplies can be found.

Battle
When the player wants to leave Spongeland, they must enter the Sponge Dome in order to begin the final battle. Once inside, the player must defeat an army of Villagers. When all villagers are destroyed, the player can enter the door that leads to two sets of ladders, both of which lead to the top of the Dome, where a Venturechest containing Portal supplies is located.

Venturechest
The Sponge Dome Venturechest contains supplies to build any one of seven different Dimensions, the exceptions being the Nightmare Dimension Portal and, obviously, the Spongeland Portal. Therefore, the player is able to choose what Dimension they would like to enter next by building that specific Portal.