The Windows versions of the first two episodes in The Doctor Who Adventure Games are now available to download internationally.
Both City of the Daleks and Blood of the Cybermen, are now available globally from Direct2Drive.com, IGN's digital retail game store.
The games are being launched to coincide with the North American season finale of The Big Bang, which airs July 24 on BBC America and SPACE, and with this year's Comic-Con festival. No Mac version has yet been made available internationally.
The games are still available to download free of charge for fans in the United Kingdom. Two more episodes are planned for release over the next couple of months.