This type of snake game allows the user to set specific colors for some game elements. You can calibrate the game to make the snake visible only for one eye and the apple for the other eye. In that way you can play the game with 3D glasses and the eyes forced to work together as a team to see both elements at the same time. (You can play the game without the 3D glasses too but it makes it more challenging.) You can use it with a two-color anaglyph glasses and note that the color is not important because you can adjust the colors in the app as you wish