The Mattel MEGA Construx Halo Universe Series 3 Blind Bags are interlocking blocks featuring characters from the Halo video game series. Released in 2023, these mystery bags contain bulk lots of building toys perfect for fans aged 9 and up. With a space-themed design, these products are part of the Halo product line by Mega Bloks, manufactured in China. Each blind bag offers a chance for collectors to add to their Halo character family collection, making it an exciting addition to any building toy collection.