Serpentine

The player controls a multi-segmented blue 'good' serpent in a maze with the objective of eating all computer-controlled 'evil' (red or orange or green) 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.

Source: TheGamesDB