If you want a piece of gaming (or personal) history on the relative cheap side then toss this one in your download queue, but if you’re not a collector or nostalgic then snap up one of the more interesting Game & Watch DSiWare releases instead.
Summary[DSiWare] Brush up on your juggling skills with Game & Watch: Ball. Move the juggler's arms to catch the balls. Drop a single ball and it's game over. [Nintendo]