The Chocobo Hot and Cold Game

Starting the game
Talk to one of these NPCs:

The NPC will talk to you at length about the game. Eventually, you should receive a Tandjana Wildgrass item and some Key Items.
 * Key Items: A Prairie Chocograph and a Bush Chocograph.

After receiving these items, take a look at your Key Items to determine what area you would like to search for treasure in. Go to that area and use your Tandjana Wildgrass. After using it, you will be placed on your chocobo and you will be shown a map with a ??? marker. You can review the location of the ??? marker on your area map (/map) by switching to the green marker tab. Proceed to that general vicinity and proceed to dig. You do not need any Gysahl Greens to dig.


 * Note: You cannot change area with your chocobo while doing the Hot and Cold game.
 * Note: Be careful not to dismount while digging for treasure.
 * You can not continue digging by using your Chocobo Whistle to remount.
 * Note: You can only receive the Tandjana Wildgrass once per day.
 * "After your chocobo rests long enough" -- which is past JP midnight (10 AM EST)(11 AM EDT) (3 PM GMT).

Digging Messages
You will receive one of four messages when digging:

Within 2 to 6 dig attempts of the fourth message you will receive the following message: A "VCS Crate" will spawn where you dug. You need to dismount from your chocobo to open the chest. The item obained will fall into the Treasure Pool if you are in a party and/or alliance. Notes: After 13-14 dig attempts, you may receive the following message: After 19 dig attempts, you may receive the following message:
 * Kweh! Kweh! Kwehhh! (You've found a treasure chest!)
 * Your chocobo seems a little fatigued. (Was able to dig at least 5 more times after receiving said message)
 * Your chocobo refuses to dig any more. Perhaps you should try another day.

Treasure from the Bush Chocograph areas
Notes:
 * It's possible to get more than one item of one VSC Crate.