During development, different ways of traveling between levels have been considered. One of them that almost made it into the final game was the rifts system.

This way of traveling would have been very similar to the one in Ratchet and Clank: Rift Apart, where a rift opens before you and you are teleported to a new level.

The system was completely functional but this idea was later scrapped as it would have required high-speed SSD to work correctly and it didn't fit with the theme of the game.

Some remainings of this system can be still found in the game files but this traveling method can no longer be used in-game