Welcome to StaudSoft's Synthetic World 0.2! It allows you via a seed to create a unique landscape with mountains, oceans, trees and beaches. Although it looks like a normal game engine, everything in the game is based on voxels. So everything you see can be changed. You can cut down trees, build a house or dig into the ground!
awww but you should also take a pic from down your foot, just to make sure the lower part gets a pic (just in case :D)