VAR (Video Assistance Referee) has, since very beginning, had a huge influence on refereeing, players, trainers, officials and spectators in a football match, and eventually it has changed the mode of the football game itself and the football in general. VAR is used as a supervising tool in four following situations: to check if the goal has been scored; if an incident that is penalized has been made; an incident penalized by direct red card; and an incident of a foul incident. The aim of VAR system is not to reach ultimate correct decision making in each situation, but to make impact to refereeing and the football game as such, the impact by which the major mistakes that have impact to the final score can be corrected. Data analysis of the main European leagues has proved that VAR has had a big impact – the number of fouls, yellow and red cards, and false simulations; also, the number of penalties adjudicated with VAR analysis has been increased. The FIFA study showed that, before VAR implementation, a key refereeing error occurred in every third match. After VAR implementation, such errors occur much less frequently, at average, each nineteenth match. Further improvements and improved transparency is expected to happen in near future.