The main objective is to help the three zombie brothers navigate through the perilous landscapes of Iceland, dodging dangers and obstacles while searching for precious gems. The goal is to gather enough gems to succeed in their thrilling adventure.

The game is set in Iceland, an icy realm with perilous landscapes. It's a mysterious and beautiful yet deadly environment that presents various challenges for the players.

While specific details about levels are not provided, the game involves navigating through different parts of Iceland, each presenting unique dangers and obstacles, effectively creating a progression through stages.

Control mechanisms are not specified in the provided description, but typically in such games, players use touch controls or arrow keys to move the zombies around, helping them avoid dangers and collect gems.

There's no mention of a time limit in the game description. However, the emphasis on dodging dangers and obstacles suggests that timing and quick reflexes are crucial for success.

Obstacles include various dangers inherent to the icy and perilous landscapes of Iceland. These could range from environmental hazards like ice cracks and avalanches to other threats that the zombie brothers must avoid to progress.

Power-ups or special items are not mentioned in the game description. However, given the nature of the game, it's possible that there might be items that temporarily enhance the abilities of the zombie brothers or provide advantages in collecting gems.

While specifics aren't provided, failing to gather enough gems likely means not achieving the main objective of the game. This could result in not succeeding in the brothers' adventure, though the exact outcome isn't detailed.