Eidos' Batman: Arkham Asylum has snuck (or maybe wholeheartedly punched) its way into the UK games charts, grabbing the top spot.

The game gets a fairly even split between the platforms - the Xbox 360 took 55% of the sales, while the PS3 mopped up the remaining 45% (the PC version will be along later in September).

Elsewhere in the Top 10 there's not a lot of movement, except for more Batman action with his LEGO title clambering from Number 12 to Number 9 and CoD4 jumping seven places to Number 10.

Barring Arkham Asylum, the second disc-based expansion for Fallout 3 is the only new entry into the Top 40, debuting at Number 20.

You can see the Top 10 in full below. The entire Top 40's here.

(NE) - 1 - Batman: Arkham Asylum - Eidos
(1) - 2 - Wii Sports Resort - Nintendo
(3) - 3 - Ashes Cricket 2009 - Codemasters
(2) - 4 - Wolfenstein - Activision
(4) - 5 - Wii Fit - Nintendo
(5) - 6 - Call Of Duty: World At War - Activision
(7) - 7 - Mario Kart Wii - Nintendo
(8) - 8 - Tiger Woods Pga Tour 10 - EA Sports
(12) - 9 - Lego Batman: The Videogame - Warner Bros. Interactive
(17) - 10 - Call Of Duty 4: Modern Warfare - Activision