South Park: The Stick Of Truth is one of the best licensed games ever made: retaining the anarchic spirit of the source material while still being a good game in its own right. Utterly irreverent, frequently disgusting and wonderfully offensive, it's well worth checking out - and you can save a little extra by getting a Steam code from CDKeys.com.
To knock the extra quid off, you'll need to 'like' CDKeys.com on Facebook and receive their latest voucher code. As far as I know you can just 'unlike' them and repeat the process if you've used it already. Thanks to theg @ HUKD!