How many snakes does it take to change a light bulb? Three. One to hold the ladder, one to put in the new bulb and one to eat the old one.
Not an especially funny punchline that, and in truth the real answer is 'none'. Snakes have neither limbs nor opposable thumbs, making the question a nonsensical one in the first place.
Nevertheless, the folks over at Maturus prefer the first answer, choosing to glue three different forms of mobile classic Snake together in one single package. Sadly, there's not a digested light bulb in sight.