Major manufacturers old game preservation policy 8-bit game has disappeared a lot

We all know that old books will be kept in the library, old movies will be kept in the archives, so you know how outdated games are handled?　　A few days ago, overseas media disclosed the relevant practices of major players.　　Microsoft: As long as it is through Microsoft's game, they will choose each game of multiple product copies, game source code, trailer promo, promotional advertising posters, role settings, such as the original painting to save, save the warehouse set up a special temperature and humidity adjustment device to maintain a suitable environment.　　Nintendo: They will keep the rich raw materials of the old games, from designing sketches and conceiving documents, and have the option of making public presentations through their own museums and retail outlets. Sony: Depending on the region, they will choose different ways to save the game data, including the source code.　　In addition to all the game data can be properly archived, other physical development materials will be selected in different ways to save. Capcom: Like most Japanese developers, Capcom began to consciously save old games from the 16-bit mainframe era.　　Many 8-bit mainframe ERA old game raw data and development materials have unfortunately disappeared in the long river of history. More information please pay attention to play the game network more