Ultima World - interesting adventure, there in world with interesting survive, you must survive for create new civilization and build spaceship for return to home. In realistic voxel world with full terraforming landscape you can get the ores and build yours houses and factories. First in Ultima World you should create your first instruments from stones and wood. After you can obtain rock and ores and create more efficient instruments. Then you can build first bronze steam machines and create an automated manufactory. Your technologies progres begining from stone "century" to space "century", Don't forget that main character want eat, drink and warm. Create transports, mechanisms, power lines and change this planet as you want.