This is an official weekly event mode in Plants vs. Zombies: Battle for Neighborville where only one capture point is active at a time. If the RAR contains files for this, it might be a mod or a recorded gameplay file.

Downloading .rar files from unofficial or third-party sources carries significant risks.

There is a fan-created world concept called "Arctic Isolation" for Plants vs. Zombies 2 that features ice-themed zombies and plants. The RAR could be a fan-made mod implementing this concept.