Bryan Singer's original X-Men premiered in cinemas at the turn of the century, kickstarting a superhero boom that's still very much front and centre in cinema today.
The X-Men movies took comic books seriously, exploring themes of isolation and prejudice present in Stan Lee and Jack Kirby's Marvel creations. It's fair to say that without the X-Men movies there'd be no Christopher Nolan Dark Knight trilogy.
X-Men also paved the way for numerous sequels and spin-offs, growing a famously convoluted, branching timeline and some movies of incredibly varied quality. Here they are, from worst to best.