Skyblivion is a modification that aims to port The Elder Scrolls IV: Oblivion to The Elder Scrolls 5: Skyrim engine. The landscape and interiors of the original Oblivion suffered from uniformity due to software generation. The developers of Skyblivion are fixing this manually by reworking it, adding many new details and adding unique climate zones to different parts of Cyrodiil. All game assets will receive a redesign, and some unique weapons and armor will get their own unique models. The modification has been in development for a long time, but the release date is not known. The authors promise to make it completely free, but you will need licensed fourth and fifth parts of the scrolls with all additions. More information at official website project.