Apple Snake is a classic casual puzzle game. The objective of the game is to feed a worm to the safe target gate, by moving it using arrow keys. This can be achieved by either placing the worm on a platform or on an pipe. If the worm moves to the edge of the pipe, it will be cut in half, and the game is over. The pipe has a length of 100 units, and each unit contains a certain amount of space.

In this game, the number of arrow keys is equal to the number of units in the pipe. Each move consists of a series of numbers, and the challenge is to solve the puzzle by arranging the numbers. The first move is always the first key, and the last move is always the last key. The challenge is to create a sequence that gets the worm to the safe target gate.