SEGA Swirl is an addictive puzzle game where users try to align Swirls of the same shape together to make bigger combos. Players can take out any size combo, but they are penalized 100 points for taking out any Singles (combos of size 1). If the player can finish the current level or current game without any singles, they will receive a double score bonus!! Originally for PC and SEGA Dreamcast, now it is also available for Palm OS!! Users can play by themselves in Level Mode or Practice Mode, or challenge a friend to a head-to-head real-time match playing over the Infrared Port.