This is one of two engines being used in the development of the Revival Saga, based at the Metroid Revival forums, at http://metroidrevival.freeforums.org . This engine has been created by AlexR, with heavy edits by Kaizaran for use in the fangame Metroid Dread, a piece of the fangame series, The Revival saga. I hope you enjoy it! If you would like to learn more about the project, don't hesitate to visit our forums, as linked to earlier, as we would be more than happy to have you. Have a great day!