The Tardis Electronic playset is scaled to fit the 5" Doctor Who figures (available separately). Press a button on the console and lights flash and you hear authentic Tardis sounds. There are lots of bits to play with: the doors open, panels on the floor lift up, etc. and as long as you have a couple of figures to go with it, play value is quite good.
Be warned that this is not pre-assembled. It took us about an hour to put all the bits together. The pieces are a mixture of plastic and card. You need to follow the instructions for building it quite carefully, and it's a job for adults rather than younger children. Once we'd worked out which bit was which, it wasn't that difficult to build, just fiddly, as one piece would pop out of place as you pushed the next bit in. If you're buying this as a Christmas present, it might be necessary to put aside some time on Christmas morning to build it! And then rebuild it when the doors fall off.
Once built, this takes up a lot of space - it's about 60cm (24") across at the widest point, and needs to be stored somewhere it won't get kicked or trodden on, otherwise the card bits will tear. Most of it can be taken apart and reassembled, but it's fiddly and the card pieces will bend or rip if you're not careful. It's difficult to move once assembled without bits falling off.
The set is normallly sold in demo mode, where only one of the buttons works to make a noise. There is a well-concealed switch just under the control panel, near the demo button, which slides to activate play mode. This gives a constant background noise and allows you to press a number of other buttons on the control panel to make different noises and effects. Slide the switch to off to silence the background noise and save batteries.
Overall, a good toy for Doctor Who fans, as long as you have time and space for it!