Crab engines are mechanisms that may be built with one or more crab statues. Crabs, by nature, jump at a rapid pace. If they are left in a confined space with a Red, Green, or Yellow Pressure Plate to jump on, they will press the switch at a rate about 50% faster than a 1 Second Timer. This setup is useful for farms and other mechanisms with a cooldown of less than one second.
The activation rate is about six times faster than the one second timer. This was tested by comparing the activation speed of Torches.
The Bird Statue Engine is 5% faster than the Crab Engine.
There are also Mana Machines that can give infinite mana by killing a ton of crabs. It's simple to build one of these. You can take a 1 second timer or build a faster engine to keep the crabs spawning in a closed off space. Then place 2 ravens in that closed off space so they will kill the crabs continuously. It's also a nice source of making money because you get also crab banners.
- Added to the game.