The collection's "v1.0.165" status or "Anniversary" branding typically indicates the inclusion of all post-launch content , which primarily expanded the game's social and competitive longevity:
: This is the premier cooperative experience, where up to four players fight off waves of increasingly difficult Orks and Chaos forces.
: This DLC allows players to flip the script, stepping into the role of Chaos Space Marines to take on the Imperial Guard and Orks.
Ultimately, the Warhammer 40,000: Space Marine Collection is an essential piece of the 41st Millennium for any fan. It provides the necessary backstory for Captain Titus before his return in the sequel and stands as a masterclass in capturing the sheer scale and grim darkness of the Warhammer 40,000 universe.