Machine in the Underwater world, which duplicates the bubbles which enter it from the bottom.

Bubble duplicator.png

Can be places atop of the Underwater volcano, Air pipe or another duplicator.

Most often the copy of the entering bubble is created. But sometimes, due to performance reasons, the bubble remains one, but its volume (and the amount of gas inside) is increased twice. So, the duplicator always increases the amount of gas twice.

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