Footy buses previously operated by Reading Transports Goldline division are now operated by their Reading Buses division. According to the Reading buses website the 7, 30 and 90 day prepaid tickets are valid on these services. Also the network eerily one that covers Newbury to Reading (I think) is also valid.
£5 a game saving for me as I buy the weekly one for the work commute anyway.
http://www.Reading-buses.co.uk has details at the bottom of the footy bus section.