The set appears to have everything to build what’s shown, but from the parts list on the side, it’s missing one of the 12 long yellow blocks (has 11). It’s also missing the mayor figure. BUT, it does have the 11 extra pieces off to the left. These are above and beyond what is shown on the parts list. The Thomas train is complete as shown. In total there are 84 pieces vs the 75 noted on the box.

The Mega Bloks Thomas & Friends Thomas At The Windmill set (10554) features over 75 interlocking blocks made of plastic, allowing children to build and play with their favorite Thomas character from the popular train-themed series. Suitable for ages 3 and up, this builder set encourages creativity and imaginative play as kids construct various scenes and adventures with Thomas and his friends. Perfect for young fans of Thomas & Friends, this Mega Bloks set offers endless building possibilities and storytelling opportunities.