image was leaked online after. This version was in Japanese and much more complete than previous versions. The emulation community was inspired by the release to improve Super FX chip handling in their Super NES emulators. A fan translation patch was also released which took four people and over 100 hours of work. The patch developers also changed a debug modifier that was set to zero, preventing Corneria from taking damage. All leaked ROMs are beta versions. Some gameplay features do not work correctly, are incomplete, or hampered by bugs. According to Cuthbert, all the leaked ROMs lack the final few months of QA work. They were also all set up in debug mode, so the encounter systems and randomized gameplay elements do not work correctly. Speaking about the final beta ROM, he said: "The basic parts are there, but there is an adage in game development, 'The last 10 percent is 90 percent of the game' and the ROM is missing that last 10 percent of iteration and refinement". Official release When compiling a list of games to include on the Super NES Classic dedicated console, the system's producer proposed the inclusion of Star Fox 2. He thought it would be a waste otherwise to never release a completed and debugged game. Nintendo had preserved the game since its completion, making it easy to bring it to the Super NES Classic. The device was announced along with Star Fox 2's inclusion in June 2017. The announcement came as a delightful surprise to Cuthbert. No one from Argonaut or Q-Games was consulted or otherwise made aware ahead of the reveal. Some of the original developers celebrated the announcement. The Super NES Classic was released on September 29, 2017, in North America and Europe and on October 5 in Japan. The version is the localized English ROM that was completed in the 1990s, though Cuthbert suspected Nintendo had to make minor changes, such as altering screen flashing, to get it past modern regulations. Promotional artwork for Star Fox 2 was created by Takaya Imamura, the original Star Fox character designer. The instruction manual was released digitally online and included concept art and design documents, an unusual move for Nintendo. In December 2019, Nintendo released a video of upcoming games for its Nintendo Switch Online NES and Super NES services. The update includes Star Fox 2 as a part of its portfolio