Frostbite Caves Resurgence (冰河再临; pinyin: bīnghé zài lín) is a Secret Realm and the 23rd world overall, introduced in the v3.2.7 update as an expansion to Frostbite Caves.
This Secret Realm, unlike most before it, is a permanent one, similarly to Fairytale Forest, and features 10 levels with both a normal mode and a hard mode. Although this Secret Realm serves as an expansion to Frostbite Caves, it is still different from the expansions of the international version. Featuring a new lawn exclusive to the expansion, a remix of Frostbite Caves' OST, a snow effect in hard mode levels, and last but not least, veterans that double as Elite zombies.
Similarly to night stages, sun does not fall from the sky in here.
This Secret Realm was shut down at January 31st 2024, making it no longer accessible. It has been planned to be remade, by rebalancing and optimizing the realm in general, such as its difficulty, the level design, balances, etc. and is planned to be accessible again in the future.
Collect 15 Historical Stars on all 10 levels (Available from Dec 21st 2023 — Jan 11th 2024)
Ice Weasel Avatar "来杯拿铁"
*The same rewards apply for every level, mode-respectively.
Gallery
Frostbite Caves Resurgence Lawn
Trivia
The final wave for this realm unintentionally uses the Modern Day final wave intro soundtrack due to improper music installation.
This issue is only present in the iOS version.
An expansion for Frostbite Caves in the international version was planned several years before this, but scrapped likely due to the negative reception expansions received. Most of the zombie designs from this secret realm originate from these concepts, though modified.