ChuChu Rocket!

ChuChu Rocket! is a 1999 action puzzle game developed by Sonic Team and published by Sega for the Dreamcast. The objective is for the player to place arrows on a board to lead mice into escape rockets while avoiding cats. The game features single-player modes in which a player must save all the mice on a board, and a multiplayer mode in which players battle to collect the most mice. Directed and produced by Yuji Naka, ChuChu Rocket! was developed to test the Dreamcast's processing power by displaying many characters at once, and also to test the online functionality of the Dreamcast and Sega's servers, as it was the first Dreamcast game designed to make use of online.