This ECTS demo of Conker's Bad Fur Day would have been a playable version showcased at the European Computer Trade Show to generate hype and gather feedback. It likely featured a limited selection of levels and possibly some elements not present in the final version.  It's a glimpse into early marketing efforts and game previews.

Conker's Bad Fur Day ECTS Demo

Conker's Bad Fur Day (USA) (Beta) (ECTS 2000) (2000 08 26)