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The Virtual Boy needed software that justified its weird 3D promise, so Nintendo put Mario on the court.
Mario's Tennis is a straightforward sports game, but its real assignment was selling the Virtual Boy's stereoscopic gimmick with easy-to-read depth and fast ball tracking. It is simple by later Mario Tennis standards, though historically useful as an early sports testbed for Mario in 3D space.
Example
The game is also one of the earliest projects to put Mario into a dedicated tennis framework before Camelot fully turned that idea into a series.
Why it matters
It matters because it sits at the junction of two Nintendo experiments: the doomed Virtual Boy and the future Mario sports pipeline that would later become a staple.
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