Toys R Us has been working hard to lure LEGO customers in their stores all month long with their exclusive Mini Modular Building LEGO Bricktober 2014 free promo giveaways, and now they've got another big event planned to drive in buyers this weekend--a totally free Bricktober Build! With LEGO Batman mania at a fever pitch after The LEGO Movie and with LEGO Batman 3 set to hit stores in under a month, Toys R Us is ready to cash in with a free LEGO Bat Signal set build this weekend!