Power-Up Stones

A Power-up Stone is an item that can only be obtained during Events. Power-up stones double the chances of success when powering-up a rune. One stone is used up for each power-up attempt, regardless of whether it was successful or not. The inventory count for Power-Up Stones is only displayed at the rune power-up screen. Stones will expire and be destroyed if they are not used before the end of the event during which they were given out.

In addition, each stone is added to a running total number of stones as part of an event counter. The count increases whenever a Power-up Stone is acquired, and the Stones used at Rune Power-ups will not be deducted from the counter. Power-Up Stone events will normally give out additional rewards based on the running total number of stones collected during the event.

Recorded event dates

Start Date	End Date	Expiration Date	100 Stone Reward	Additional Rewards
Apr 20, 2015	Apr 28, 2015	May 7 2015 at 12am PDT (Global Server)	Crystal x 150 1 Angelmon per attribute (Fire+Water+Wind)
Aug 17, 2015	Aug. 30, 2015	Sep 6 2015 at 8am PDT (Global Server)	Crystal x 150 3* Rainbowmon (Max Lv.)	A player receives 20 Energy for the first Power-up Stone they find, available once per day for the duration of the event.
Sept 17, 2018	Sept 30, 2018	Oct 1 2018 at 7:59am PDT (Global Server)	100 Energy & 100,000 Mana Stones	Based on number of runes crafted, players can recieve 1 Mystical Scroll, 30 Ancient Coins, 1 Attribute Scroll per attribute, 200 Crystals, 20 Ancient Coins, and 1 Devilmon.

Drop locations

During the events, power-up stones can be found anywhere in the game, except in Secret Dungeons and the Arena .

Using Power-up Stones

To use a Power-up Stone proceed to upgrade a rune as normal but select the "Power-Up stone" option on the upgrade panel. One stone will be used per upgrade attempt.

1. Select the Rune to Power-up.
2. Check the Power Stone before tapping on the [Power-up] Button.
3. Tap on the Power-up Button.

Variations

Sometimes Power-Up Stones will come in different variations, often being themed around specific holidays or real world events.

Image	Name	Description
	Power-up Stone	This stone was made by crystallizing Mana extracted from pure crystals. Your success rate will be doubled if you use this stone for Rune Power-up.
	Soccer Ball Power Stone	The energy of an otherworldly festival channeled into and crystallized to become this Power Stone. Use it when you Power-up your Runes to double your success rates.
	Halloween Candy	It's sweet candy for Halloween! Use it for Rune Power-up to double your success rate!

In other language

Language	Title
English	Power-up Stone
Korean	강화석
Japanese	強化石
Traditional Chinese	強化石
Simplified Chinese	强化石
French	Pierre d'amélioration
German	Aufwertungsstein
Russian	Камень усиления
Portuguese	Pedra de Melhoria
Spanish	Piedra Potenciadora
Indonesian	Power-up Stone
Malay	Batu Power-up
Vietnamese	Nâng cấp Đá
Thai	หินเพิ่มพลัง