Green Monster Survival 4 Story is a free Android game developed by IDLERO in the Action game category. It is the fourth installment of the Green Monster Survival series, where players continue to uncover the secrets of the abandoned kindergarten. In this version, players explore a vast underground realm, encountering new characters and obstacles along the way.

The game is built around the theme of survival as players battle their way through the complex hidden basement structure. The story revolves around the monster school, and players must discover the truth while fighting off intriguing locals. Players encounter new characters like Sheriff Toadster, who guides them through each underground bunker, and Ziphiuss, Tamataki & Chamataki, as well as a strange newcomer known only as The Jester, who they must battle to survive.

The game features easy controls, with players swiping to move and tapping to jump over obstacles. They must collect hidden messages and decode them to search for items, escape from traps, and open doors. The game includes poison ponds and countless other dangerous traps that players must avoid. As they progress, they can improve their skills, overcome challenges, and unlock more levels. The objective of the game is to locate the haunted room's exit while avoiding the surrounding traps.