So you've learnt to fly the TARDIS and defeat the Cybermen and Daleks. But how will you fare against the fearsome Vashta Nerada? In an underwater base. While being attacked by alien sea monsters. Do you think you're ready?
Travel across time and space in these brand new online adventures - available free in the UK, only on this site. Can you stay out of the shadows, rescue Poseidon's crew and discover the incredible secret behind it all?