The player controls a multi-segmented blue 'good' serpent in a maze with the objective of eating all computer-controlled 'evil' serpents. Eating the tail segments of serpents makes them shorter, and a red or orange serpent turns green when shorter than the player. Hitting a green serpent headfirst eliminates it, and causes the player's serpent to grow an additional segment. Hitting a red or orange serpent headfirst causes the player's serpent to die. A frog appears at random intervals and gives any serpent eating it an additional segment. Once all opponents have been eliminated, the player's serpent automatically returns to a protected area. As the game progresses, opposing serpents are faster and longer, increasing the difficulty, and each advancing level the existing players serpent gets slower. If the player's serpent dies, the replacement regains its original speed, but loses any additional segments gained by the previous incarnation. One unique aspect of the game is how extra lives are gained. The playing serpent will lay an egg and, if the egg is still on screen when the player re-enters the protected area at the end of a level, the egg hatches into another serpent, which hurries to the protected area. Enemy serpents will also lay eggs; if one hatches, a new two-segment opponent appears. It is possible to lose the last segment to an egg, resulting in the death of that serpent, but this can only happen to the player's serpent. If a frog happens to appear while an egg is on the map, it will head towards the egg and eat it as well. This will occur even at the end of a level when the player's serpent is operating on autopilot, making the choice of position where the last enemy serpent is killed tactically important. Most versions of the game include 20 different mazes, but the Atari cartridge version only has 5.
Reception
Softline in 1982 called Serpentine "devilishly addicting, being endowed with the qualities that make arcade gamesworth the bother". Michael Cranford reviewed the game for Computer Gaming World, and stated that "In my opinion, Serpentine is far better than the sum of its inspirations." Karl Westerholm reviewed Serpentine in Space Gamer No. 65. Westerholm commented that "Serpentine is unquestionably a game worth owning, and if there are any weaknesses or bugs, I have yet to find them. I definitely recommend this game, as it promises to provide fun and excitement for a very long time." The Commodore 64 Home Companion in 1984 said that "it's easy to get hooked on this one". Serpentine ranked #13 for most popular game of 1982 according to Softalk magazine.
