Usually, Lego mock-ups of devices aren't playable. That's not the case for this gorgeous Pac-Man tabletop arcade machine [via Geekologie]:

The innards of this pretty device are 100 percent arcade-worthy, while the outside is completely unaltered Lego. That's pretty neat, but tabletop cabinets have been around since the late 70's. I cover them in my retro catalogs posts. 

It plays more than Pac-Man, though, like so many other MAME (multiple arcade machine emulator) systems out there today.