Echo: Secrets of the Lost Cavern is a computer adventure game released in 2005. It was developed by Kheops Studio and published by The Adventure Company. It is very similar to previous Kheops Studio games; the interface and gameplay are almost identical to Return to Mysterious Island. The player takes the role of Arok, a 15 year old European Homo sapiens from the Paleolithic period. Source: Wikipedia, "http://en.wikipedia.org/wiki/ECHO:_Secrets_of_the_Lost_Cavern," available under the CC-BY-SA License.