Despite going down a man six minutes into the second half, Iceland held Croatia to a scoreless draw in Reykjavik to send the play-off into Tuesday's second leg in Zagreb with everything to play for.
FIFA.com looks at some of the footballing faces who will be celebrating their birthdays over the coming week, including Eidur Gudjohnsen and Simone Perrotta.
Iceland midfielder Aron Gunnarsson speaks excusively to FIFA.com about his country's FIFA World Cup hopes, working under Swedish coach Lars Lagerback and scoring Cardiff City's first Premier League goal.
Frank Lampard has revealed he would like to replicate the longevity of Ryan Giggs and Paul Scholes, as the Chelsea midfielder, and club's newly crowned all-time top scorer, nears his 35th birthday.
Tottenham midfielder Gylfi Sigurdsson grabbed both goals to down Slovenia and keep Iceland's hopes of FIFA World Cup qualification alive. Slovenia had earlier taken the lead through Milivoje Novakovic.
Join FIFA.com as we look at the key trends and round up the major moves completed over the past fortnight, including Wesley Sneidjer's transfer to Turkey and Rivaldo's switch to Sao Caetano.