The four corners of the world map are clickable once hextiles close enough to them are revealed. Each one has a numeric value, as though they were numbers on the numeric keypad (shown to left). If a specific series of values is entered, a secret, usually cosmetic, enhancement is enabled. These features also work on Vision Fields, with the exception of the Gift Gems feature.
|11331791||Grey Trees (finish a level with this mod for an achievement)|
|13371337||Spinning tower shots|
|77311973||Gift gems (level 1 gem at start; always selected from the field's original available gem types)|