The cherry blocks are absent from "Mr. Do Vs. Unicorns" and early revisions of "Mr. Do's Castle". Instead, blocks that are not keys or skulls at the start of a stage will be fill blocks (those left behind when unicorns fall into holes and are left alone for a time). Because of this, there are only three ways to complete a level in this version, versus the four ways to complete levels in "Mr. Do's Castle". In addition, in these early revisions, the fill blocks change colors every two stages.