3 - 1.5 MYA, Great Rift Valley, East Africa --- The oldest stone tools were discovered in East Africa, from 3.3 million years ago. The earliest evidence of fire use also resides in East Africa, from 1.5 million years ago. By referencing fossil evidence from the same environment and time as these tools, SAPIEN allows you to experience the first sparks of human intelligence and survive alongside the extinct plants and…