TOKYO--Sega has taken its official Web site for Sonic Advance 3 live. Following the tradition of the franchise, Sonic Advance 3 will play as a side-scrolling action game, but this time around the game will utilize a new "partner system," which allows play by either two human players or a single player and an AI sidekick. The system allows characters to assist one another as well as combine their abilities to execute special attacks. Players will have their choice of five selectable characters, including Sonic, Tails, Knuckles, Amy, and Cream (with her sidekick pet, Cheese). Sonic Advance 3 is due to Japanese retailers on June 17.