CDX from the BBC.......
"A sacrificial blade forged at the birth of the Roman empire holds the key to an ancient and bloody conspiracy that threatens to erupt into the present day.
Stranded in 21st century Tunis, Adam Foster is plunged into a world of greed, betrayal and murder. But who has the blade, and can the killers be stopped?
Unlock the mystery in this unique interactive-video adventure."
4 episodes released so far
Play them here