"World" title inspiration
The choice of "Mario Kart World" as the title reflects the game's open world concept. "If the idea had just been to add more courses, then I think we would’ve called it Mario Kart 9," producer Kosuke Yabuki told an Ask the Developer interview. "We wanted to take the series to the next level. So, we decided to drop the numbering this time and go with a completely new title, Mario Kart World. So, we'd already added “MARIO KART WORLD” to the concept art from the early stages of development."