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Unstable Isotope-8

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Unstable Iso-8 Prismatic

"Special Operations require the resource Unstable ISO-8 to access its mission events, including battles and deploys. You can earn Unstable ISO-8 through battle or deploys, gifts from friends, or buy it from the store to help you complete the challenge. However, once the mission is expired that flavor of Unstable ISO-8 goes away with it, so try to use it all up!"
— Special Operations Briefing

Unstable Isotope-8 (Unstable Iso-8 or  U Iso-8) are used specifically in Special Operations in addition to the normal requirements to initiate each battle or deploy. They are also used for researching various items that are only available from unlocking the Blueprints from completing Spec Op Tasks. Only Special Operations 1 required 5 Unstable Isotope-8 per battle or deploy and had no research. From Special Operations 2 forward, each deploy and normal battle requires 10 U Iso-8 and each boss battle - Mini, Regular, and Epic - requires 20 U Iso-8 to initiate. Blueprints specific to each Special Operation require 80, 100, or 120 Unstable Iso-8.

Starting with Special Operations 2, with the exception of Special Operations 3, with 550 U Iso-8, each player started with 440 Unstable Isotope-8.


Green Unstable Isotope-8

Unstable Iso-8 Green

Green Unstable Iso-8

This variant of U Iso-8 was available in Special Operations 1 and Special Operations 17.

  • In Special Operations 1:
    • Players were given a random starting amount of between 65 and 500 ISO-8. (Unconfirmed)
    • Each battle, including Epic, Mini-Bosses, and Mission Bosses, and Deploy mission cost 5 ISO-8 along with the regular requirements.

Blue Unstable Isotope-8

Unstable Iso-8 Blue

Blue Unstable Iso-8

This variant of U Iso-8 was available in Special Operations 2 and Special Operations 14.

Yellow Isotope-8

Unstable Iso-8 Yellow

Yellow Unstable Iso-8

This variant of U Iso-8 was available in Special Operations 3Special Operations 6, and Special Operations 11.

Red Unstable Isotope-8

Unstable Iso-8 Red

Red Unstable Iso-8

This variant of U Iso-8 was available in Special Operations 4Special Operations 9, Special Operations 12, Special Operations 16, and Special Operations 18

Purple Unstable Isotope-8

Unstable Iso-8 Purple

Purple Unstable Iso-8

This variant of U Iso-8 was available in Special Operations 5Special Operations 7, Special Operations 10 and Special Operations 13.

Prismatic Unstable Isotope-8

Unstable Iso-8 Prismatic

Prismatic Unstable Iso-8

This variant of U Iso-8 was available in Special Operations 8 and Special Operations 15. Daily Gifts from MAA's Facebook page of this colored Isotope-8 could be added into future Spec Ops before they were taken down by Playdom.

Obtaining Unstable ISO-8

Unstable ISO-8 can be obtained from:

  • Gifts or requests from Allies
  • Any type of Combat within the time frame of the Spec Ops event (Including Seasons 1 and 2 and PvP).
  • Deploy Rewards, Boss, and Epic Boss Roulettes. Prizes come in 1, 20, or 40 Unstable Isotope-8.
  • The Daily Reward. Prizes come in 20, 100, or 1000 Unstable Isotope-8.
  • Links by Playdom.
  • Visiting Allies.

Gold Exchange

Gold can also be exchanged for Unstable Iso-8. This can be found by pressing the "+" button next to the players' current amount of Unstable Iso-8.

Gold icon   for  10 10  Gold icon   for  100 25  Gold icon   for  250



  • Previous post Special Operations had Unstable Iso-8 continue to drop in Allies and Combat. They serve no use and does not carry over onto the next Special Operation.
  • There was an Art Bug wherein Special Operations 15 used Blue Unstable Iso-8. This was corrected on later updates.

Start a Discussion Discussions about Unstable Isotope-8

  • Unstable Isotope from previous missions

    2 messages
    • Are the Unstable isotope I had left from the past special missions should be transfered in future missions ?
    • Unfortunately no.  Every spec ops seems to introduce a new varient iso8, different for the last. Your old red iso8 has disappeared. Nick F...
  • What is it???

    9 messages
    • wtf?? urinated ?? ha ha ha ha ha ha ha ha :P
    • It is used to prevent system interferences in the special operations. they provide unique signature's of energy emanated by those capsu...

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