Many locations in Isle Delfino feature a series of swirl-shaped glyphs. While seemingly unreadable to the average player, these symbols are actually a cipher for the Latin alphabet. Consequently, most instances of them can be decoded to generate coherent messages:

• The sign on the Sand Cabana in Gelato Beach reads "BAR GELATO".
• The sign above the entrance to Pinna Park reads "PARCO", the Italian word for "park."
• The sign on Pinna Park's pendulum ships ride reads "VIKING".
• The Isle Delfino guide book's preview image for Noki Bay features symbols in the corners that read "NOKI" when read in the following order: top-left, top-right, bottom-left, and bottom-right.
• The flag atop the orange dome in Noki Bay reads "MARE VILLAGE", the location's Japanese name.

In some instances, however, the translation does not produce actual words or sentences:

• The wall paintings throughout Noki Bay feature various nonsense combinations of letters, with some featuring just one.
• The stone trimmings in various parts of Noki Bay simply repeat the alphabet from A to Z.
• In the international release, the game's signboards read "RZTU BOD TVR". Of note is that this is a replacement for English placeholder text that was featured in the Japanese version. The placeholder text is taken from a dictionary, with some portions inexplicably removed. The unaltered text reads "This isn't gonna hurt a bit. Just a little stick. Ready? 1...2...3. There you go. All done," while the text that appears in-game reads "This isn't gonna Just a little stick. Ready? 1...2...3. There you All do."