The film centers on a Japanese prisoner transport vessel that meets disaster during World War II, leaving two men—a Japanese agent and a British soldier—marooned together on an island inhabited by a terrifying beast. The movie was quite effective when it concentrated on the encounters with this creature; its appearance and behavior were intensely brutal, and the deaths shown were bloody, explicit, and very violent. I…

The idea behind "Monster Island" held potential initially. However, it appears those involved didn’t know how to effectively utilize this throwback monster story reminiscent of 1950s cinema. For most of the movie's length, the plot essentially drifts without purpose. It would have been better if the film had swiftly developed into a survival narrative, focusing on ordinary characters who bravely face danger and de…