Resident Evil 5: Gold Edition is an enhanced version of the classic action game, featuring additional content that expands the original experience. This edition includes two new campaign expansion episodes titled 'Lost in Nightmares' and 'Desperate Escape', where players can take control of characters Josh Stone and Jill Valentine to assist Chris and Sheva in their battle against bioterrorism. Additionally, it offers the previously released Versus mode, enhancing the multiplayer experience.

In terms of gameplay enhancements, players are treated to four new costumes along with an alternate Mercenaries mode, which introduces eight new playable characters, as well as new items and maps. This comprehensive package provides a significant amount of content for both new players and series veterans, ensuring a robust and engaging gameplay experience.