Jam Puzzle That's Quite Difficult Without Watching Ads

This is a jam puzzle where you collect colorful stacked balls with cars of the corresponding color. If you play carelessly, the car you need might be in the back, or the balls for the car you want to bring out might be at the top, leading to an easy roadblock. In terms of gems, both the daily quests and hidden quests don't offer a quantity that I feel matches the difficulty. Watching ads to increase your space makes it significantly easier. Conversely, it's a jam puzzle that's quite difficult to clear if you don't watch ads.