Unbox, reveal and start building! Mystery Builders include 50 pieces in each box. Scan the QR code inside or use the included instructions to build your mystery character. A paper scene is also inside each box to display your finished creation! Plus-Plus is a creative construction toy for hours of play. Kids – both girls and boys, and their parents find joy in using their imagination to create colourful 2D puzzles and mosaics or build 3D creations together. A perfect educational STEM toy that stimulates fine motor skills, creativity, focus and patience! Plus-Plus: One Shape – Endless Possibilities.