The Making of Mega Man Battle Network Legacy Collection: Insights from Capcom.

TL;DR
Capcom's Mega Man Battle Network Legacy Collection director, Masakazu Eguchi, revealed in an interview that the project was in the works for about two years and fans' interest played a part in its realization. The game launched on Switch and other platforms in April and has sold over one million copies.
Capcom on how Mega Man Battle Network Legacy Collection came to be Nintendo Everything
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