A free program for Android, by Robot Squid.

King of Crabs is a free-to-play action game for Android devices where you are destined to become the King of Crabs! Your goal is to become the ultimate ruler of the island by gathering all the strange and wonderful crabs, and then using your power to dominate the island. You will need to do this by building your own kingdom and defending yourself from other players. You can play with up to 100 other players in the same game.

You will be able to collect and upgrade a variety of different crabs. Some of them are very useful, and will help you in the game, while others are pretty useless. The most important thing is that you need to decide which ones you want to keep.

The game is based on the concept of building and crafting.