Okay, first things first, yes, it’s a little strange of a title for the set. However…
THIS is the replacement/reissue of the Builder’s Forge set that barely saw distribution.
I for one am VERY happy to see it released as I had been asking Mega (outside of social media) to re-release the set.

At a robust 450 pieces, the set should retail for between $40-50. There are several alternate/rebuilds with this set!

The instructions included show you how to make this small base, a mongoose and a mini pelican.

The alternate build allows you to expand on the base and you can rebuild parts to make a mini warthog!

I really like the holoboard included in the set!

As seen, the Builder’s Box comes with two Spartans. A Red Gungnir and a Blue EVA. Note the old style energy sword the Gungnir Spartan is holding! We haven’t seen that one in a very long time!

Here is the official text blurb from Mega about this set:

BUILDING BOX
Features
• 450-piece Halo-themed building set with special pieces, unique shapes, builder’s multi-tool and brick separator, and a resealable storage box
• 2 highly collectible micro action figures, Spartan Gungnir and Spartan EVA, with authentic detail, 12 points of articulation and numerous interchangeable weapon accessories
• Includes 3 building ideas to start the mission; many more available online
• Ideal for ages 8 and up, this building set features detailed authenticity to strengthen creative thinking skills
• 450 bricks and pieces combine with all Mega Construx building sets and are compatible with other name brands
Product description
Build your own Halo universe with this 450-piece creative building box. Prepare for battle with 2 micro action figures, special pieces – like wheels, risers, a shield and so many weapon accessories – custom piece shapes and a Halo-themed color palette. The set also comes with 3 building ideas to start your mission. The box even features a resealable flap perfect for storage. This creative construction set is the perfect tool to hone your training, soldier.
Ideal for Probuilders, ages 8 and up
What’s in the box?
450 pieces
2 micro action figures
Set number: GPT03