My idea is to have a fish with different scales on the body. Each scale has a pair.
We remove the scales finding the matching pair.
We win the game after matching all scales. We will have a spine on its place.
-Eat the Fish
-Another better name than those 2. They are not yet perfect.
Expansion Idea for after the jam:
-Dress the fish: the scales are placed on the spine according to a logical sequence or puzzle matching type.