What is going on with that Wikipedia article. The first two sentences are written badly to the point of being incomprehensible.

If you understand German (I couldn’t find the French version) you can also watch this about the same principle: https://www.youtube.com/watch?v=1A2LYK9x9eM&t=325s

It’s basically identical to the Susu in the Wikipedia article you linked to (and many of the same points are made in the radio and TV show), but this time it’s called a Tontine and it’s being used in France (imported from Africa): http://en.wikipedia.org/wiki/Tontine

The Tontine described in that article is a bit different from what you were describing and from what Susu is – but the Tontine described in the TV show is basically identical to the one described in the radio show.