OUTERPLANE’s Bunny Moon Party marks the first anniversary of the game’s service transfer, with Demiurge Lambda, a reported free Monad Eva bunny costume, and several anniversary activities. The official event archive listing says pre-registration is open through October 12, 2026. It does not establish a closing hour or time zone, so check the in-game notice for current terms and claim details.
What Bunny Moon Party adds
The event combines a new hero, a login costume, anniversary missions and rewards, and expanded tower content. The official archive listing identifies Bunny Moon Party as the service-transfer anniversary event and gives October 12, 2026, as the pre-registration deadline. See the OUTERPLANE event archive.
Demiurge Lambda
Pocket Gamer describes Demiurge Lambda as a 3-star Light-element Striker-type bruiser with self-healing. Inven Global additionally reports damage reduction and says she is a permanent Demiurge hero available through Demiurge Selection Recruitment. Those acquisition details are Inven’s reporting; confirm the current banner and recruitment terms in the game before spending resources. Pocket Gamer’s October 6, 2026, event coverage; Inven Global’s October 5, 2026, report.
Monad Eva’s Bunny Moon costume
Pocket Gamer reports that Monad Eva’s Bunny Moon costume is a free login-bonus reward. The coverage does not specify the precise login schedule, eligibility, or claim window. Check the event notice in the client for the steps and dates that apply to your account.
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The event dungeon features missions and themed rewards. Its English name differs between reports: Pocket Gamer calls it “Operation Bunny Moon: A Big Thank-You!”, while Inven Global uses “Thank-You Moon Bunny Mayhem!” Inven also describes Moon Rice Cakes and exchangeable event currency; Pocket Gamer mentions special mochi cakes in Luna Kingdom. Treat the names as a localization or reporting discrepancy, not as confirmed alternate official titles.
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Both outlets report a 10-page 1st Anniversary Bingo. Inven says daily missions and a coin exchange shop offer rewards such as equipment, growth materials, hero-related rewards, Dimension Call Tickets, Special Recruitment Tickets, and Breakthrough Memory. Pocket Gamer also reports anniversary login growth materials and recruitment tickets. Exact reward conditions and claim dates are not specified in the coverage.
Tower expansions
The five elemental towers—Earth, Water, Fire, Dark, and Light—are reported to expand from 100 to 150 floors. A new 100-floor mode without element restrictions is also reported, but its English name differs: Pocket Gamer calls it “Universal Tower,” while Inven Global calls it “Tower of All Things.” Check the game client or official patch notice for the name used in your version.
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How to approach the anniversary activities
These activities have different reported reward paths; pre-registration should not be confused with in-game login or event participation.
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- Log in: The Bunny Moon costume and growth materials are reported as login rewards. Check the in-game notice for the required login days and claim window.
- Play the event: The dungeon and bingo provide separate missions and rewards, with Inven reporting a coin exchange shop. Confirm event duration and requirements in the client.
- Choose tower content: Elemental towers extend to floor 150 and call for element-specific teams; the reported new 100-floor mode removes element restrictions. The game client can confirm the mode’s localized name.
Pre-registration deadline and offline event
Pre-registration is reported to remain open through October 12, 2026. The official archive listing is dated September 21, 2026, and the two reports were published October 5 and 6. None provides a deadline hour or time zone, so do not assume the cutoff is midnight in a particular region.
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Inven Global also reports that OUTERPLANE will appear at Illustar Fes 14 at KINTEX Exhibition Center 1, Halls 4 and 5, in Ilsan, on October 10–11, 2026, with merchandise and visitor programs. This is a report about an offline Korean event; it does not establish an online store or online availability for specific merchandise.
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