Letters from Home: Everybody's Playing the Game But Nobody's Rules are the Same

[emptynight]

It was late on Night 39 when the letter was delivered:




At around the same time, a sizeable box was delivered to the kitchen. The box contained:
an assortment of French perfumes, colognes, and aftershaves
a half dozen Wiffle Bats
a singularly odd plush cat/apple (with a tag that read For Isaac)
a copy of a video game
and a note

There's no name on the box, nor any identifying marks regarding who would have sent such a thing. The only thing on the box that is a clue to its origins is a postmark: Chicago, IL.