A record football crowd of 29,669 watched Brazil beat Cameroon 1-0 at Stadium MK on Tuesday night.
Everton striker Richarlison scored the only goal of the game for the five-time World Cup winners on the stroke of half-time.
However, fans hoping to see Neymar in action were left disappointed after the world's most expensive footballer had to limp off with a thigh injury only six minutes into the match.
Supporters booed as the PSG star left the pitch and headed straight down the tunnel for treatment.
It was a bad night for PSG, who are also sweating on the fitness of Kylian Mbappé who was hurt while playing for France.
Despite the absence of Neymar, it was a positive night for MK Dons though, with the attendance just falling slightly short of the stadium record of 30,048 which was set during the Rugby World Cup in 2015.