Next month, Nintendo will celebrate the 20th anniversary of one of its finest games. Nintendo GameCube classicPaper Mario: The Thousand-Year Door is getting a Nintendo Switch rerelease that’s somewhere between a remaster and a remake (not unlike the company’s recent Super Mario RPG revisit). But a game as beloved as this presents a challenge for developers: How do you stay true to the original while still upgrading it enough to justify a full-priced double-dip rather than an HD port?