Although Billy is only recently seeing GameCube ads pre-orders appear in Japan, according to Japanese publication 'Nikkei Business SalesWeek' the demand for the upcoming Nintendo console has really been heating up since SpaceWorld. Additionally, GameCube appeared in SalesWeek, which publishes charts for different markets reflecting the sales performance of various products. For this week in SalesWeek’s game console category, the GameCube entered the top five due to preorders alone. Nintendo has not commented on the state of presold units but many retailers have stopped taking orders due to fears of hardware shortages. Thanks to Core Mag for the hook.