In Hello Kitty Birthday Adventures, players take on the role of Hello Kitty to find the perfect birthday presents for adorable Sanrio characters like Badtz-Maru, Keroppi and My Melody. On her adventure, Hello Kitty will collect stamps and stickers for her birthday book by playing mini-games, helping friends, and finding special objects. Winning mini-games will provide hints on how to find birthday presents for various famous Sanrio characters and thus advance the game. Holidays and special events throughout the game year will offer players the chance to celebrate with various Sanrio characters. Hello Kitty Birthday Adventures for the Nintendo DS combines puzzle solving, missions, exploration, and mini-games to provide an entertaining Hello Kitty-branded experience that players can enjoy anywhere.