Optional Swap

An Optional Swap, is a swap that might not necessarily occur, but rather one that happens based on the actions on the players.

Known Occurances
In Experimental Survivor 1, at final 14, both tribes each individually were presented with a Lever, without explicit instructions of these Levers would do. In which their was a 24 hour period in which people could publicly post they were pulling the lever only told that pulling the Lever would change things and if both were not pulled it would keep things the same. When both levers were pulled (the one on Jekyll by Amanda Kimmel and the Frankenstein by Dave Cruser), it was announced both tribes were swapped into two new tribes. The tribes were determined by random.org.

In Experimental Survivor 5: All-Stars, at final 16, when their was only one tribe due to the Mutinying. The contestants were presented with a Lever, explicitly a flashback to Experimental Survivor 1. This time their was only one Lever, that anyone could pull by posting publicly that they pull it. This time it was explicitly said that pulling this lever would cause a Swap and the person who pulled the lever would receive a minor perk. The lever was pulled by Sarah Lacina and after she pulled the lever, she was given the choice to decide whether to divide people up into two tribes of 8, three tribes of 5 (sending one person of her choice, can't be herself) to Exile, or four tribes of 4. Sarah choose three tribes of 5, and sent Tessa O'Halloran to exile.

In Pokemon GO Survivor and Pokemon GO Survivor 2, one of the Pokemon Powers, is "New Leaf", which can cause a swap at anytime. This was not used on either season.