A cute and relaxing puzzle game with comfy music and visuals, however this is a ruse! It's incredibly complex and sometimes even frustratingly hard. It ranges from being off by one rail or one turn but sometimes the level loads up and I don't even know where to begin. Some of these solutions take so long to solve that a final cart can make 5 laps around the circuit and it makes you think you've beefed it. I still like this game though even if the hint system became a crutch post World 5.