Red vs. Blue: The Chorus Trilogy (Seasons 11-13) Steelbook

In the distant future, two groups of soldiers battle for control of the least desirable piece of real estate in the known universe - a box canyon in the middle of nowhere.

Season 11: 
For over a decade, the hapless, helpless and occasionally hopeless anti-heroes of the Halo universe have fumbled their way from one adventure to another. But now that they have been shipwrecked, they will have to work together to survive their greatest foe of all… themselves. 

Season 12: 
Shipwrecked, separated, and still sort of dumb. The Red and Blue soldiers of Project Freelancer are continuing their misadventures on Chorus. 

Season 13: 
Stranded on the planet Chorus, the Reds and Blues must convince two enemy armies to join forces or suffer complete annihilation at the hands of a bloodthirsty war lord.