UPDATE: The BBC have just confirmed the version of the City of the Daleks game is just a test run and that there might be some tweaks before the final game piece is released on Saturday:
“We’re testing the system with an almost-final version of ‘City of the Daleks’ ahead of the official release date,” Anwen Aspden, executive producer at BBC Wales, told MCV.
“The reaction so far has been overwhelming, but we’re still investigating whether we should tweak certain elements up to release on 5th June. So whilst those who’ve downloaded and enjoyed it in its current iteration have the advantage of playing through it early, there may be some minor tweaks coming."
"We’re running a launch trailer for the game immediately after Saturday’s episode of Doctor Who, that’s when we expect the servers to come under the most strain – we’ll let everyone know if the finished article is available ahead of then.”