A free program for Android, by Apps2US Studios.

A snake is a type of worm that has a long, slithering body and a head with a pair of venomous fangs. In many species of snakes, the fangs are used to puncture the flesh of the prey, while the body is used for movement and forage for food. Some species are also known for having poisonous saliva.

In the case of the Slink.io game, you control a worm and your mission is to grow as long as possible by consuming food, while your enemies will do the same. The longer you are, the more points you will earn, but you will also have to deal with different types of enemies that will try to stop you. 

The game is based on multiplayer, so you can play with friends or with strangers.