Forge World is utter crap compared to the THREE maps that have awesome Forge Capabilities. All the Forge World maps just seemed synonymous with each other because all of them were comprised of Forerunner structures. It had the same atmosphere. However with Erosion, Impact, and Ravine.... You get the feeling of Foundry, The ambiance of being in space, and Your basic Forge World map making on Ravine. Your opinion is wrong....