Croatia were already through to the round of 16 after two wins in their opening game, while Iceland had just one point from their two opening games.
The game ended 2-1 in favour of Croatia which meant they had maximum nine points, with Iceland finishing bottom of the group.
Croatia finish on top of Group D
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Milan Badelj opened the goals for Croatia in the 53rd minute, while Ivan Persic scored a late winner, here are reactions to the victory on Twitter.
"For the first time not celebrating perisic's goal, look what you made me do @ messi"
"A 90th minute goal by Perisic helps Croatia remain perfect in group D and win the group."
"Instead of "Perisic has scored the go-ahead goal, Commentators say: "Ivan Perisic has slayed the viking challenge, Gotta love them"
Iceland crash out
Gylfi Sigurdsson converted a penalty in the 76th minute but was not enough as Iceland suffered there second defeat of the World Cup.
Croatia finished top of group D with Argentina qualifying in second place, while Nigeria and Iceland crash out.