Battledome
Premium Members have two extra arenas to choose from: the Cosmic Dome and Void Dome, both home to several unique 1-Player challengers who can drop some particularly valuable prizes. Additionally, they have permanent access to the Space Faerie, who can be battled in the Neocola Centre. They can also receive an additional 5 prizes from the Battledome daily for free.
Prizes
The main benefit of the Cosmic Dome and Void Dome is access to a variety of desirable prizes, notably Nerkmids, Neocola Tokens.
All Cosmic Dome Prizes »
All Void Dome Prizes »
Defeating the Space Faerie will award Neopians an avatar.
As of September 3, 2025, Premium Members can receive an additional 5 prizes from battling daily. The battle rewards screen shows a counter with the amount of prizes earned for the day out of the increased limit.
General Prizes
Nerkmids and Neocola Tokens are general prizes, meaning any permanent or rotational challenger has a chance to drop them. These tend to be quick-selling items with fairly stable resale values, meaning they can be an easy, quick way to make Neopoints. Nerkmids can also be used at the Alien Aisha Vending Machine if you prefer to gamble for the chance of upgrading to an even more valuable prize, such as a Paint Brush. The same is true for Neocola Tokens and the Neocola Machine, where you can gamble for a Transmogrification Potion.
Bubbling Fungus
Bubbling Fungus is dropped only by the Giant Space Fungus on difficulty level hard. This item is desirable not just for its resell price, but because it has the chance to alter your active pet's strength.
Challengers
The Giant Space Fungus and Jetsam Ace are permanent challengers within the Cosmic Dome. Additionally, while not announced until May 5, 2025, the Space Faerie was made available to Premium Members to battle without needing to redeem a Merchandise Rare Item Code starting a day earlier. And although she is out of this world, Mira is fought in the Neocola Centre rather than the Cosmic Dome.
Since the conclusion of The Void Within on June 17, 2026, four challengers originally from the plot are now permnently available to Premium members.
Rotational Challengers
On February 24, 2025, TNT began cycling previously retired challengers into the Cosmic Dome, indicating they would rotate every 3 months. 4 challengers were added at the start, each with exclusive loot drops on top of the standard Cosmic Dome prizes.
Current Challengers
The current challengers were added on June 29, 2026 and have been available for 40 days and counting.
March 30, 2026 until June 29, 2026
The fifth set of challengers, who became available on March 30, 2026, were available for 91 days before they were taken out of rotation on June 29, 2026.
December 8, 2025 until March 30, 2026
The fourth set of challengers, who became available on December 8, 2025, were available for 112 days before they were taken out of rotation on March 30, 2026.
August 25, 2025 until December 8, 2025
The third set of challengers, who became available on August 25, 2025, were available for 105 days before they were taken out of rotation on December 8, 2025.
May 26, 2025 until August 25, 2025
The second set of challengers, who became available on May 26, 2025, were available for 91 days before they were taken out of rotation on August 25, 2025.
February 24, 2025 until May 26, 2025
The initial set of challengers, who became available on February 24, 2025, were available for 91 days before they were taken out of rotation on May 26, 2025.
This page was last updated on July 13, 2026.
