Far Cry 4 PS4 players will be able to invite any of their PSN friends to join them in game, whether those friends own the game or not.
Sony made the announcement at its E3 media briefing Monday - it's not clear if this offer will apply to any of the game's other platforms.
The Far Cry 4 release date is set for November 18 in North America and November 21 in Europe on PC, PS3, PS4, Xbox 360, and Xbox One.
Ubisoft CEO Yves Guillemot recently said he expects the game to perform even better than Far Cry 3, which has sold nine million copies since it released in December 2012.
Guillemot has also said Far Cry 4 will include "a lot more multiplayer" than its predecessor.