I could not find this posted, but looks a good price to me considering its like still £29.99 at Play. It has some good reviews from all ages on various sites.
Based on the Jerry Bruckheimer Films summer 2009 blockbuster, G-Force is an exciting action-platformer game that puts players in the role of G-Force's fearless team leader Darwin and his housefly sidekick Mooch as they bring their unique high-tech gadgets, stealth mastery, and pint-sized justice to prevent an evil billionaire from taking over the world.
G-Force is a fast-paced action-platform game featuring a unique elite team of specially trained guinea pigs that use high-tech gadgets and specialised talents to complete a dangerous government mission. G-Force puts players in control of both Darwin, the guinea pig leader of the covert intelligence G-Force squad, and housefly surveillance sidekick, Mooch, as they team up with the other G-Force agents and use their gadgets, stealth mastery and pint-sized teamwork as mankind's only hope to complete a dangerous high-level government mission.