Rare Item Monday (commonly abbreviated as "RIM") is an event where a "Rare" version of an existing item or a whole new item is sold for one day only. This event was first introduced on February 6, 2012, and typically occurs on every Monday of each week. Most of the items released are members-only clothing, but many are non-member clothing items, and very few are den items.
After May 6, 2019, The Daily Explorer has since stopped posting item artwork of each Rare Item Monday and has instead been posting artwork of a box with "Rare Item Monday" labeled on.
After March 22, 2021, The Daily Explorer stopped posting artwork of a box with "Rare Item Monday" labeled on it and has instead been posting artwork of the location where the Rare Item Mondays have been released.
A non-member Rare Item Monday is released after five member Rare Item Mondays.