Minecart Switch Remix

A turn-based rail-routing puzzle. A minecart starts at the top of the mine shaft and descends one row at a time. You lay its rail by tapping the next cell — each step can switch at most one lane left or right (a rail switch only nudges the cart sideways by one), and you can't rail through rock. Route the cart to collect every ore gem and arrive at the marked exit at the bottom. Clear all 30 levels.