As I was trawling through all my old emails, I came across one from Codemasters. You can download for free their Bliss Island game:
* Over 90 levels to explore and play
* Progressing Adventure & Challenge Modes
* Outstanding Graphics and Audio
* 5 Very Different Game Types
* Free Full PC Game
After downloading it, the <15mb setup file size didn't thrill me - it appears that it's a small game with limited playability, but I'll give it a go.
If anyone else is bored, download it from here and spread the 'Bliss Island' word. Just don't complain if it's shit.