There are two LEGO Batcave sets for Batman fans. The first came out in 2006 and has a total of 1075 pieces. This set, numbered 7783 in the LEGO series, is called "The Batcave: The Penguin and Mr. Freeze's Invasion". It recreates Batman's famous hideout and includes 10 minifigures, three vehicles, and a two-level control center. Highlights of the set include the rocket launcher and Batman's transformation chamber. Not surprisingly, the set is marked for children ages 8 to 12, since it has a huge number of pieces. It is the largest set in the Batman series. The other LEGO Batcave set is numbered 6860 and has just 690 pieces. It came out in 2012 and is suitable for ages 7 to 14. LEGO sets provide hours of imaginative play using fine motor skills that children need to develop. LEGO Batcave sets, as well as other themed LEGO sets, are conveniently available on eBay, so parents and children can enjoy the wholesome fun of a classic brick-building toy.