Soulstones in Cookie Run Kingdom can be used to upgrade Cookies that players own. Promotion of Cookies includes increasing their base Health Points (HP), Defense (DEF), and Attack (ATK).
100 Soulstones are required to upgrade a Cookie to its maximum level. If a Cookie has been upgraded to 5 stars using Soulstone, players will get Mileage Points if they draw the Cookie or its Soulstone.
Mobile gamers can then head over to the Mileage Shop in Cookie Run Kingdom and then use the points to purchase
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