Island Cave

The Island Cave (Japanese:  Islet Cave) is a location in Hoenn on a small island on. resides in the innermost chamber.

Encounter with Regice
To get to Regice, the Sealed Chamber's puzzle must be completed. After this has happened, the ruins can be accessed.

To open the door in, once in the lobby area, the player must read the Braille inside and simply stand in the same place for two minutes without touching the game. The door will still open even if the game's battery has run dry and time-based events no longer occur. The Braille reads: "Stop and wait. Wait for time to pass twice."

To open the door in, once in the lobby area, the player must read the Braille inside, then make a lap of the chamber, sticking close to the walls. The Braille reads: "Stay close to the wall. Run around one lap."

To open the door in, once in the lobby area, the player must read the Braille inside and stand in the same place for two minutes without moving. The Braille reads: "Stop and wait unmoving as time passes you by twice."

Encounter with Regigigas
In, the player is able to encounter in the Island Cave after capturing all three Legendary titans in their respective locations in that game. To do so, the player must have a nicknamed Regice holding a "cold item" (a Casteliacone, a Never-Melt Ice, an Icy Rock, or a Snowball), as well as and  in their party. Regigigas cannot be encountered during nighttime. As Regigigas is not in the Hoenn Pokédex, it can only be battled after capturing/defeating /.

If all of the above criteria are fulfilled, upon walking into the center of Regice's room, the following message will appear:
 * "The very earth is quaking! Is something approaching?!"
 * "Zut zutt!"

The battle with Regigigas will then start immediately.

If the above criteria are not fulfilled, but the player has caught all of the Legendary titans in that same game, the following message will appear instead:
 * "There seemed to be some presence here, but it disappeared in an instant..."
 * "There seemed to be some presence here, but it disappeared in an instant..."

In the TCG
This listing is of cards mentioning or featuring Island Cave in the Pokémon Trading Card Game.