The Cage

 is the forty-second level of Even More Bloons.

Completion
To complete this level, all you have to do is bounce the dart (using the Rubber Block) in order to pop the Spiky Bloons above. There Spiky Bloons will remove the Ceramic Blocks so that it can be easier to pop the bloons on the middle and on the right. Next, pop the jars of the Helium Bloons, and the dart may be able to pop a Tack Bloon on the right. The Spiky Bloon will pop the 2 bloons on the bottom. Pop the Tack Bloons when the Helium Bloons reach near them.

Trivia

 * The name may be used to trap the Helium Bloons in the "cage".