"You owe something to the Moon. Therefore, it demands a sacrifice. Its pale radiance leads you to new, hidden memories. It is said that only the remnants of the Moon will have an open path laid before them. Do you belong to that ancestry?"
The first add on is a mainly thematic expansion, cards are focused on the value of choice and sacrifice. Your willingness to sacrifice yourself without expecting anything in return will be tested.
A new type of card, the Purpose card, is introduced by this expansion. Each player starts with one and has to fulfill its requests (usually spending a Feeling on a different Vision card each turn) to win extra Insight points at the end of the game. These cards can also be part of the karma chain, so use them carefully!
Offering a new scenario for solo mode, Remnants of the Moon is compatible with solo mode.