Gem Chaser full game and demo is out for the Xbox 360.
For just 80 Microsoft Points. You can download it from Microsoft Martetplace onlineGem Chaser : Simply collect the coloured gems to match your colour - then change your colour to collect the others - Simple - but amazingly challenging - with 70 levels to beat.
Gem Chaser (ZX Spectrum)
ZX Spectrum Conversion of Gem Chaser by Bob Smith.
All 70 level from the original Gem Chaser. For Gem Chaser Spectrum and other great ZX81 and ZX Spectrum games visit Bob's Stuff