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Nostalgia is the Konaste (Konami Game Station) home version of the arcade piano game Nostalgia, based on Nostalgia Op.3. Itself part of the Bemani line of rhythm games. However the Konaste versions of Bemani games tends to live alongside the arcade game while having exclusive content, so it is unsure if the game will remain as Op.3 when a new version of the arcade game is released.