Has Nintendo ever released previously "unreleased" games?

Has Nintendo ever released previously "unreleased" games? - Focus Photo of Super Mario, Luigi, and Yoshi Figurines

Has Nintendo ever mentioned releasing games for Virtual Console (or whatever) games that were previously unreleased, such as Star Fox 2 (SNES) or any others? Moreover, has any company ever released any beta versions of games long after they had hit the cutting-room floor?

virtual-console

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Has Nintendo ever released previously "unreleased" games? - Turned-on Red and Green Nintendo Switch

Has Nintendo ever released previously "unreleased" games? - Person Holding White Snes Controller

Has Nintendo ever released previously "unreleased" games? - Low-light Photo Of Nes Controller

A CANCELED Game for an UNRELEASED System - Dreamworld Pogie (NES) - Games You Never Played

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