The BBC has released the first episode of Doctor Who: The Adventure Games. City of the Daleks was due for release on Saturday but is already available for download for PC if you live in the UK.
The Mac version won't be available until 15th June.
Official Friends of Eurogamer Rock Paper Shotgun spotted it and subsequently detailed a first playthrough of the game.
"It feels Doctor Whoy, in its verve, in its gleeful pseudo-science, its banter and its nick-of-time coincidences," wrote Alec.
"Unfortunately, it's also highly annoying - electing to substitute real puzzles with repetitive maze games and haphazard sneaking."
It's free, so we'd suggest you go see for yourself.