JIG: Peru, 1950. Strange signs have appeared in the misty mountains. You, a famous spelunker, head to the area to investigate them.. Such is the humble premise of Cavenaut, an exploration-based action-adventure game by Bruno Marcos. Don't think that the ruins of Machu Picchu will reveal their secrets so easily, however. Snake, Bat, Spike, and Spear stand in your path, and if you hope for mysteries to be unraveled, you must be quick of both mind and fingers.