Here we take a look at Croatia's World Cup squad and the other things it will be handy to know.
Croatia's preliminary World Cup squad - the 25 names
(To be cut to 23 by June 4)
Danijel Subasic, Lovre Kalinic, Dominik Livakovic; Vedran Corluka, Domagoj Vida, Ivan Strinic, Dejan Lovren, Sime Vrsaljko, Josip Pivaric, Tin Jedvaj, Matej Mitrovic, Duje Caleta-Car, Borna Sosa; Luka Modric, Ivan Rakitic, Mateo Kovacic, Milan Badelj, Marcelo Brozovic, Filip Bradaric; Mario Mandzukic, Ivan Perisic, Nikola Kalinic, Andrej Kramaric, Marko Pjaca, Ante Rebic.
What odds are Croatia to win the World Cup?
33/1
Who's the coach?
Unheralded Zlatko Dalić was parachuted in from UAE club football amid a stuttering qualification campaign and delivered play-off passage.
Who's the star?
Real Madrid's Luka Modric is a beautiful midfielder whose vision, passing and ability to prompt teammates is as good as it gets.
Best thing about them
Quality and experience all over the pitch, from 104-cap Modric to 90-cap Ivan Rakitić, the Barcelona midfielder, and powerful forward Mario Mandzukic of Juventus.
Worst thing about them
First XI looks a serious outfit but is not the youngest and there's a gulf in quality to the squad players.
You may recognise...
Dejan Lovren has markedly improved since Liverpool signed Virgil van Dijk alongside him at centre-half but remains a candidate for a big-match howler.
Cameramen will be picking out...
Fans in their splendid red-and-white cheesecloth, singing Europop. Croatia fans have an unusually large appetite for official team songs.
Fans' favourite chant
Hopefully nothing racist; Croatia have quite a bit of previous for this.
On-field prediction
Runners-up spot in group to precede narrow last-16 defeat by France.
Off-field prediction
Hopefully boisterous behaviour rather than beastly.