All these Lego Minecraft sets I've purchased for my 4.5-year-old are pulling double duty. So it is with a mix of naked longing and anticipatory digital exhaustion that I bring you the biggest Lego Minecraft set yet: The Mountain Cave, in all its 2,863 pieces, 12-inch high by 20-inch wide by 11-inch deep, $249.99 glory. Take that, The Village, last year's record holder with a comparably trifling 1,600 pieces. What you get for $250 -- in addition to tendonitis -- includes a winding minecart track with a redstone (that is, battery) powered minecraft elevator (plus two minecarts), a TNT blaster, both "first night" and mountaintop shelters, a rotating spider-spawner, a "charged" Creeper and a lava burst. If you want to light up stuff like the spawner, shelter, lava or various other thing, there's a movable light brick.