Child of Light beats Ratchet & Clank Trilogy to top PS Vita chart.
The mixed martial arts game is EA's third All-Formats No.1 of 2014.
New teams posted every Monday, Wednesday and Friday.
EA's 2014 FIFA World Cup Brazil the week's highest climber up to No.2.
Murdered is new at No.3, whilst Mario Kart 8 sticks in second place.
The biggest ever launch week of a new IP in the UK, with a 58% increase on the figure achieved by LA Noire.
Update: World Cup Kick Off mode out now for PS4 and Xbox One.
Bethesda and MachineGames' first title earns the second biggest launch of 2014 behind Titanfall.
Will launch on May 29 for Xbox One, PS4, Xbox 360, PS3 and PC.
Lower prices are valid for Silver and Gold members.