[PSA][NA] Expiring stones and other timely things

Here are some changes to the JP version (which will eventually arrive in NA/KR/EU) that you might want to pay attention to, if you want to maximize your free resources. For example, some dungeons will be replaced/renewed, which means that they will give new stones, and if you clear them before that, you can get both stones.

Be aware that the usual feature lag was 2-4 months, but recent updates have been taking less time: Mechanical Star 1 buffs in 26 days, 3-minute stamina in 23 days, and survey UEvos in 22 days.

I plan to post this every several days.

Table of contents

0. Glossary
1. Ultimate Arena upgraded
2. Restricted Descends renewed
3. Metalit Descended becomes a weekday dungeon
4. Co-op solo mode removed
5. 4x Reset!

Glossary

• Urgent dungeon: Also known as Guerrilla dungeon. Dungeons that appear for one hour at a time, such as Metal Dragon Infestation. Descends can also appear as Urgents.
• Expiring stones: When a dungeon gets replaced and gets a new stone, you can't get the previous stone ever afain.

Ultimate Arena upgraded (JP: v8.6 2016.01.15)

Arena is becoming harder, with new stone(s) to go with it. You'll lose up to two stones: regular clear, and Challenge Mode clear (lol).

Restricted Descends renewed (JP: v8.6 2016.01.16)

Restricted Descends are getting renewed (removing restrictions and raising difficulty).

The following eight dungeons are being renewed:

• Zhang Fei (currently in Coin Dungeons)
• Dragon Zombie (currently in Coin Dungeons)
• Dark Knight (appeared last week)
• Gaia (appeared last week)
• Draggie (TODAY)
• Guan Yinping (appears Saturday)
• RO ACE Collab (appears next Tuesday)
• Tengu

Notes:

• There are three apparent versions of each dungeon: the one in the Daily/Event Descend schedule, the one that appears for one hour at a time as an Urgent Dungeon, and the one in the Coin Dungeons. The first two are the same, while the last gives a separate stone. So you can get two stones per dungeon.
• All of the dungeons were either in this event or in the coin dungeons during this event. Their removal is probably soon.

Metalit Descended becomes the Monday dungeon (JP: v8.8 2016.02.22)

The Metalit Descended Urgent Dungeon is becoming the weekday Monday dungeon.

Co-op solo mode removed (JP: v8.8 2016.02.25)

Co-op dungeons will no longer have a solo mode. Instead, the alt dungeons will be copied to technicals, the harder stuff will be copied to coin dungeons, and co-op dungeons will be at half stamina. See this thread for details.

According to u/pucciqan, the co-op stones will be refreshed. So beat them before that happens. Co-op stones will not be refreshed.

As posted by u/Zielregen, if you only play solo mode, this is the time to farm the descends (including rushes). Otherwise, you will have to pay coins every hour you farm.

u/DoujimaNanako reports that the alts have increased in stamina cost from 25 to 30. This means they will be ~17% less farmable.

The new coin dungeon versions of the co-op descends will have (permanent) special bonuses, as outlined by u/blvcksun here. The Rushes will be 1.5x drop, for example.

4x Reset! Best Friend, Present Egg, and Memorial Machines (JP: v8.8 2016.02.25)

These four things will be reset. If you haven't already used your Best Friend and Present Egg, pay attention to the next few maintenances.

The Memorial Machines each give one guaranteed pantheon/Godfest Exclusive monster. If you rolled it before, you get to roll it again.

Here are the ranks you want to hit before the update:

• Present Egg: Rank 20
• Best Friend: Rank 50
• Memorial Machine 1: Rank 150
• Memorial Machine 2: Rank 250

Note: The Rank 250 machine hasn't arrived in NA yet. But it might come before this reset, so if you think you can get to 250, try.