In the USA and in Kanada the Game&Watch were distributed as Pocketsize versions beside the regular games. The Pocketsize games came with colourful boxes, typically with cartoon like characters (more information about Pocketsize).

Not very many of these Pocketsize versions were produced, this makes them rare or even very rare. Typically it's very difficult to collect them. But now a collector managed to get all of them. See this stunning collection in the picture gallery.