Medal Exchange Center/LINE

Medal Exchange Center is the marketplace in Cookie Run, where players can redeem medals they gained for rewards such as Ingredients, Mystery Jewels, Keys, and many more. This feature is being introduced to Cookie Run since 23 October 2015. To access the Medal Exchange Center, players can tap the "Medal Exchange Center" button at the League Leaderboard.

Players can only see six items in the exchange center, and the list will be randomized every noon (12pm, GMT+9). Should a player wanted to refresh the list without waiting, said player can spend 30 to refresh instantly.

This also brought the debut of "Expand Treasure Cabinet" Ticket, which allows players to add spaces to his or her Treasure Cabinet without the use of Crystals.

Changes in Wrath of The Dragon
Starting 28 June 2016, Medal System has been changed to League System. This drastic shift causes a lot of changes in the Medal Exchange Center. Most notable, cost of Medals needed to redeem rewards has been inflated by around 100% (or adjusted) using the new currency named "League Medal". Other changes notable in the new system are:
 * 1) Location of Medal Exchange Center has been changed from inside "Weekly Rankings" to inside the League Leaderboard.
 * 2) Mystery Jewels and S-SS grade Ingredients from Special Episode 2 is now available in the center.
 * 3) Elixir of Experience XL and XXL is now available in the center.
 * 4) Keys now appears more often.
 * 5) Treasure Cabinet's Expansion Ticket now appears more often while +15 is no longer in the center.
 * 6) S-grade Ingredients now appears less often.
 * 7) Elementary Treasures has been removed.
 * 8) Can no longer buy Medals with Crystal.

List of Rewards from the Medal Exchange Center
Before 28 June 2016, Medals can be purchased with Crystals. These (if available) also account as an item among the six daily items in the center.

Trivia

 * In August 22. Mystery Jewels is removed from center