Oblivion Looks Amazing Built Inside Of Skyrim

As noted on the project's official website, this is a volunteer-based undertaking by the TESRenewal modding group. In other words, nobody is making a penny off of it, which is probably why the folks at Bethesda have been happy to let the project continue its course. It's also noted that this is a work in progress, so, while the video certainly makes it look like the mod/game is complete, there's still plenty of work to be done. The team is currently rebuilding Cyrodiil, which requires recreating all of its quests, locations and characters using tools from Skyrim. In other words, they aren't just rebuilding the lands of Oblivion using a new engine, the goal is to have a complete, functioning version of the game running in Skyrim when all is said and done.