Just built 71767 my first ever Lego Ninjago set. Was scared it might be a little too childish for me but I couldn't be more wrong. Turned out to be one of
Amazon.com: LEGO NINJAGO Lloyd's Titan Mech 70676 Ninja Toy Building Kit with Ninja Minifigures for Creative Play, Fun Action Toy Includes NINJAGO Characters Including Lloyd, Zane FS and More (876 Pieces) :
LEGO MOC Lloyd's Titan Mech Dragon by aido_k | Rebrickable - Build with LEGO