At launch, Homefront: The Revolution used Denuvo Anti-Tamper technology. While it was eventually bypassed by various groups shortly after release, current digital versions (like those on Steam) are often updated to remove or optimize these systems.

Homefront The Revolution Gameplay Walkthrough Part 2 - FREEDOM

If your query refers to the "cracked" (pirated) status of the game or its technical stability:

The "crack" or breach in enemy lines is achieved through guerrilla warfare tactics such as ambush, sabotage, and infiltration, rather than direct military confrontation. Technical and Performance Context

As the protagonist Ethan Brady, players work to create a "crack" in the occupation's control by performing guerrilla acts like hacking transceivers and liberating strongholds to ignite a second American Revolution .

Philadelphia is divided into "Zones." The Yellow Zones are populated by collaborators and civilians living in a high-surveillance police state, while the Red Zones are bombed-out ruins where the Resistance operates.

The Homefront: The Revolution Wikipedia page describes a re-imagined timeline where the United States is occupied by the Greater Korean Republic (KPA). The "state" of the world is defined by a deep rift between the occupiers and the oppressed: