Bring construction-site excitement to playtime with the LEGO Technic Mighty Machines - 44 Pieces. This compact mystery-box building set gives young builders the chance to discover and build one of eight collectible construction vehicles. Each box contains one surprise machine, making every unboxing an exciting experience. The possible vehicles include a road roller, wheel loader, dump truck, cement truck, wrecking ball crane, mobile crane, bulldozer, or excavator. Each machine features its own moving function powered by LEGO Technic elements, giving children an engaging introduction to simple engineering concepts while they build and play. With 44 LEGO pieces, this set provides a manageable building experience for children ages 7 and up. Once assembled, the machine can be used for construction-site pretend play, collected alongside other Mighty Machines, or displayed as part of a growing LEGO Technic collection. Each mystery box also includes a collectible playing card featuring statistics about the machine and a road graphic. Children can collect the cards, use the road graphics together as they collect more sets, or play and trade cards with friends. The set can also be used with the LEGO Builder app, which provides interactive 3D building instructions. Builders can zoom in, rotate the model, follow their progress, and enjoy a more interactive building experience. Discover a surprise construction vehicle with the LEGO Technic Mighty Machines mystery-box building set. Each box contains one of eight collectible construction machines with its own moving function. With 44 pieces and a recommended age of 7+, it offers an accessible introduction to LEGO Technic building and simple engineering. A collectible game card adds another way to play, collect, and interact with friends.