Like any great puzzle game, the premise of CHU CHU ROCKET is simple: guide groups of skittish mice into your rocket, steering them clear of the grumpy cats that are wandering around. The only thing you can use to get the mice to safety is an endless supply of directional arrows, which will change the direction the mice are heading. But just getting the mice into your rocket isn't enough; you've also got to keep the cats out, because they'll wreak all kinds of havoc if they get in: rockets will move randomly, things might slow down, speed up or completely freeze, or a handful of other random circumstances. CHU CHU ROCKET is not only a unique premise, it's also the first Dreamcast game that lets you go online and play against other mouse wranglers around the country. You can also design your own mazes and go head-to-head with a friend to really liven up the party.