The episode order is different for every user profile. See https://www.netflix.com/tudum/articles/how-to-watch-kaleidoscope-explainer

The order currently used is what is in the initial press release.

The "Black" episode is not really an episode. It's a short 1-minute video explaining what I've just stated, that everyone watches it in a unique order (apart from the last episode).

This is all confirmed by a moderator to be the case for TMDb, but I thought I'd make a thread with an explanation title for anyone heading here confused.

If you want to watch it in the Chronologic order, see the Chronologic order episode group.