At the very beginning, I did not quite understand the meaning of this mod for the Java server, but when the customer explained for what purposes it is used, I immediately remembered the map “Crossfire” from the online game Half-Life. There you could start a chain of events in the bunker.
This mod uses NPCs to collect items specified in the mod settings to a specified amount. After all the items are collected, the script launches an arbitrary event specified in the code. This can be anything within the gameplay – from calling a grand boss to the causeless death of all players on the server who are online.
I found this mod very funny, and the customer is a person with good taste and a sense of humor. Sometimes even simple ideas can completely change the perception of the server and the impression of it.