The group stage was littered with VAR-assisted decisions - many of them correct, a few not so much (Cristiano Ronaldo and the missing red card, for example).
VAR seemed to disappear in the knockouts in Russia 2018 but it returned with a vengeance in the final as France played Croatia.
[Follow France v Croatia in the World Cup final live]
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At 1-1 in the first half, a cross from France struck the arm of Ivan Perisic, entirely accidentally given he had no time to react when the ball flicked off the head of a France player.
But shockingly, after much deliberation, the penalty was given by referee Nestor Pitana.
People weren't very happy.
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