Ahhh Spore - the new game from the producers of the vastly successful Sim City & the Sims series of games. It's new & it's awesome - got a copy at the slightly reasonable £33 from Morrison's & it works of PC & Mac - shiny.
Basically you create a race of infinitely customizable creatures, from single celled organisms, all the way through to exploring space - it's a vast game, with large elements of individuality - I've not been able to recreate the same creature twice!! It's highly, highly addictive & my buddies over at X-Play have described it as the game of the year - probably the decade. I'm not 100% sure about that but it's definitely one of the best I've played recently. So go check it out!