When broken, it releases 9 friendly bat-like critters that behave like regular Critters, except for the fact that they are flying units. A special variant of the Critter Container is present for Mega Crab Events near Halloween.When a Critter Container is broken, it releases 9 friendly Critters that attack the enemy buildings regardless of player's own Critters level.Others may nonetheless make appearances in some Mega Crabs, depending on its theme for example, the Super Warrior Vat appeared on the Tribal Crab. Of these buildings, only the Critter Container and Cryo Bomb below make regular appearances on Mega Crabs.A number of buildings appear only on the Mega Crab and cannot appear outside of it (or its spinoff, the Mega Turtle).In some events, a single ability is available in all stages (for example, Cryobomb in Cryo Crab), while in others, different stages have different abilities (for example, Anniversary Crab). Some events may have certain Temporary Gunboat Abilities available.

Temporary Gunboat Abilities Main article: Temporary Gunboat Abilities

One free attack is given upon the completion of any stage.

From September 2018 onwards, 40 attacks are given at the beginning, but do not regenerate over time.Different Mega Crabs have different numbers of maximum attacks. In earlier events, attacks are given after a certain period of time has elapsed.The player is provided with a number of attacks at the beginning of a Mega Crab event.The Mega Crab can only be attacked if the player has attacks remaining.To beat a stage, you must destroy the Mega Core.Each stage of the Mega Crab generally has more powerful Defensive Buildings and Ice Statue boosts than the previous one.Stages can contain all regular Defensive Buildings and all Prototype Defenses.This changes the shape of the battlefield for each stage. Between stages, different parts of the floor will raise or lower.Each stage is unlocked as the previous one is defeated. The Mega Crab has an infinite amount of stages.They seem to be nuclear reactors that power the Mega Crab. There are two giant containers on its back with nuclear symbols.Its left claw has a grey drill while its right claw has a clamp.It has 3 large, red eyes on the front and two huge claws.It has 6 legs, 3 on each side, powered by heavy hydraulic engines.The Mega Crab is an enormous purple crab-like machine created by Dr.

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