Sansinukob is the world Bagani was set.
Bathala, the Creator, created Sansinukob from the brightest star he saw. He throws it to the landless ocean and filled it with creatures, including humans. But the land was created with a dark secret: Bathala made it to act like a prison to evil creatures he vanquished many years ago.
But there are unexplored regions, with Matutulis Island.