Celeste is a perfect a platformer as has ever been made. Its mixture of charming visuals, fantastic music, and challenging levels added up to one of 2018’s best games. That seemed to be the end of it; the story was over, the mountain was climbed. But a final epilogue chapter, added this week, brings a whole new level of challenge. This ninth chapter, Farewell, pushes Celeste to unparalleled heights and might just be one of the smartest things I’ve played all year.