Potion Sort — sort potions by color
Each bottle contains layers of potions in different colors. You choose a bottle and pour its top layer into another one. The goal is to leave only one color in each bottle.
The main rule is simple: you can only pour a layer onto the same color or into an empty bottle. That makes the empty bottle the only free space on the level. If you fill it with the wrong color, the next move can become impossible. The logic is similar to Cake Merge 2, where matching items also need to be grouped together. But here nothing merges into a new item — the color just stacks up in one bottle. As you move through the levels, there are more colors and more bottles.