Onu-Koro Cave-In

Onu-Koro Cave-In is a fan-made point-and-click adventure game based on LEGO's Bionicle series. It is set between the 2001 and 2002 story arcs, after the Toa's defeat of Makuta in Mangaia but before the rise of the Bohrok. The player controls a Matoran who arrives in the underground village of Onu-Koro to find that a network of tunnels has collapsed, blocking the way to other villages and causing the local Matoran a significant amount of stress. Unable to help in clearing the tunnels, the visitor Matoran instead decides to assist the locals by helping them find items that they need.

Gameplay consists of talking to Matoran to find out what they need, finding the item in question, and then taking it back to the aforementioned Matoran, who will then give the player another item that they must then deliver somewhere else. Talking to Matoran will often reveal clues about who the current item needs to be delivered to. The player can move around the village either by walking or by riding Ussal crabs. The game 'ends' once the player has no more items to deliver, at which point they can visit Turaga Whenua for a special reward.