"Last Survivors: IDLE RPG" is an iPhone game developed by Guangzhou Lungxi Information Technology Co. Ltd. Set in a post-apocalyptic world, the game unfolds after a meteorite crash in G City, unleashing a mysterious gas that turns creatures into ferocious monsters. Survivors, known as "Haunters," must venture out of their safe havens to scavenge for supplies and build new homes.

Players can team up with allies to pilot doomsday mechas, explore Gothic-style wastelands, and strategically combat mutant monsters. With a focus on gear development and firepower, the game offers a unique system for enhancing weapons and defeating hordes of enemies effectively.