Finally!!! This is the Halo Mega Bloks inspired Firebase! Heavily inspired by a cancelled set from 2011 now finally brought to life ~15 years later… 

Much assembly is required as well as some extras for the best experience:

1. (6) 10''x10'' base plates from amazon (I personally use the “lekebaby” off brand base plates but any should do fine)
2. Super Glue (CA glue is my choice) for gluing the turret barrels into the turret body's and the black inner wall pieces into the green exterior walls
3. Your own MEGA figures and vehicles and accessories to make your Firebase your own!

In this model there are SEVERAL prints you will have to do to complete this set. But, it is all straight forward, you only have to print one of each plate for the intended design. 

Printing tips:

Use tree supports for: the exterior walls, background mountain wall, turret barrels, gate pieces
Use normal supports for everything else