Chronicles of Riddick: Assault on Dark Athena, PC - £23.49

Chronicles of Riddick: Assault on Dark Athena, PC - £23.49 delivered

Wii Music, Wii - £19.99

Wii Music, Wii - £19.99 delivered

Alone in the Dark, Xbox 360 - £6.99

Alone in the Dark, Xbox 360 - £6.99 delivered

Chrono Trigger, DS - £17.99

Chrono Trigger, DS - £17.99 delivered

Eternal Sonata, Xbox 360 - £5.99

Eternal Sonata, Xbox 360 - £5.99 delivered

Pikmin (New Play Control), Wii - £19.99

Pikmin (New Play Control), Wii - £19.99 delivered

Ratchet & Clank: Size Matters, PSP - £7.20

Ratchet & Clank: Size Matters, PSP - £7.20 delivered

Guitar Hero: World Tour with Guitar, PS3 - £40

Just got a tip that GHWT with guitar is forty quid in Morrison's stores right now. The store checked (Congleton) only had the PS3 version available, but apparently other stores also have the 360 version.

A quick check on eBay shows the game itself reselling for just over £20, so if you're looking for just an extra guitar for either game this is probably your best bet.

Each version of the guitar is compatible with every other guitar-based music game for the same system.

1600 Microsoft Points - £13.49

1600 Microsoft Points - £16.63 delivered

This is intended specifically for the Lost and Damned expansion for GTA IV, but you can use the points for anything. The 2100 card one post below is better value but if you won't use the extra 500 on anything then this is your best bet.

2100 Microsoft Points - £16.63

2100 Microsoft Points - £16.63 delivered

Cheapest price for this amount of points right now, just in time for the GTA IV Lost and Damned expansion on Tuesday.