As the sibling comment says, was relatively popular here in Europe. It was my first GNU/Linux disto. I had problems installing Debian in a laptop with a nasty Wifi PCMCIA card, Mandrake was able to make it work.
Me too! Count me in! Mandriva was my first ever Linux distro! It was so long ago that I forgot it happened. I came to think that was Ubuntu, but it came after Mandriva and after Ubuntu I was on Debian, of course. Now it’s Arch on my laptop and Fedora on my desktops.
In 1999 I paid about $30 for a copy so I didn't have to spend weeks downloading it over 56k.