The Rifts

The rifts in this world were cause by the secret government project titles 'Subsulto'. Initially the intention of this project was to discover ways to transport items over long distances instantaneously with ease. Scientists found that creating rifts in space was the most effective way to do this, ultimately setting up labs to test this.
During testing these rifts were opened for too long, and were subsequently unable to be closed. Overtime these became large enough to allow different entities from other worlds to pass through.
These rifts now act as a one way gateway of some sorts that connect other worlds to our own (Many dimensions connecting to our world), allowing different entity to pass into our world not being able to return to their own.
As well as allowing different entities to pass into our world, these rifts also cause other worlds to seep into our own. This ultimately changes the environments around these rifts (these environments are no known as the corrupt lands).

for more information on the rifts impacts, click here.