From Halopedia, the Halo wiki
The MEGA Construx is an Experience at Halo: Outpost Discovery.
Build your own battle missions with Halo® Mega Construx™! This interactive exhibit is open to fans of all ages and is the perfect shared experience for the entire family. Come enjoy our huge collection of Halo® Mega Construx™ micro action figures and experience a buildable full-scale Drop Pod that brings the sci-fi universe to life!