One of the more memorable moments in Zelda history was when Nintendo showed a GameCube tech demo at Spaceworld A brief scene. The Legend of Zelda: Space World Demo was a technical demo shown at The demo was part of a tech demo showcasing upcoming games for the. The SpaceWorld Tech Demo was a demo for what a future The Legend of Zelda title might look like with the capabilities of the Nintendo. Everything you need to know about The Legend of Zelda -- Space World Demo. It's one of the most infamous video game trailers of all time. At Spaceworld , Nintendo set aside some time to show off what its legendary. known as the SpaceWorld sword was wielded by Ganondorf in The Legend of Zelda-based SpaceWorld GameCube Tech Demo. This video was shown at Space World of , and exceeded every Zelda fan's expectations. The same tech demo was shown in May, at E3.