There is an arrow in the game named after a member of the game's Steam Community page named WillieSea, who created a dictionary of items and indexes found in Salt on the page and also discovered an early way to edit the values of the game's save data in its registry. When Version 1.5 of the game rolled out, the developers changed the way the data was saved in the registry, and with it implemented an easter egg changing the name of the Ancient Shard Arrow weapon to "Willie's Favorite Arrow". The only known way of accessing the renamed arrow is to modify the hex values of any save file from Version 1.4 or earlier and then convert it to Version 1.5 whereby the game runs under the new save system.