Hearts of Iron 4 is offering a free weekend for players to access the base game, coinciding with the release of the new DLC expansion, Hearts of Iron 4: No Compromise, No Surrender. Players can access the game for free until Monday, allowing them to explore its features without financial commitment. The expansion focuses on the Pacific theater and introduces new historical pathways for Japan, China, and the Philippines, although it is not accessible during the free period. Community reactions to the expansion have been mixed, with only 43% of user reviews being positive, citing concerns over pricing and content. A significant discount of 70% off the base game is available until December 4, along with nearly a decade's worth of content at up to 50% off. An updated 'Complete Beginners Guide' has been released on the game's YouTube channel to help new players.