Mega Construx Halo Pro Builders Sword Base Invasion Building Set 99PCS The Mega Construx Halo Pro Builders Sword Base Invasion Building Set is a 99-piece toy set that allows children aged 8 and up to build and play with collectible figures from the popular Halo video game series. Made of durable plastic materials, this set features a multi-color design and is based on the Probuilder theme. With a space-themed concept, this set is perfect for young Halo fans who enjoy creating their own imaginative building experiences. Made by the trusted brand MEGA, this set is sure to provide hours of fun and creative play for kids.