Collapse: The Rage is a stand-alone add-on to the original Collapse game, continuing the thrilling narrative immediately after the first installment. This expansion introduces four new chapters that delve into the return of Rodan to "The Hole," enriching the storyline and providing players with more content to explore. With enhanced replayability, players can engage with various features, including a comprehensive achievement system that offers 50 items to unlock, alongside a dedicated arena with four unique maps.

In addition to the new chapters, Collapse: The Rage introduces trials that present players with specific goals tied to the story progression. A notable feature is the experience and ranking system, which allows players to gain experience points by utilizing specific weapons, particularly swords. As players level up, they can allocate points to improve their sword fighting styles, adding depth to the combat mechanics and enhancing the overall gaming experience.