A column-drop fusion puzzler. Aim a numbered cell at one of six columns and let it fall. Three or more touching cells of the same number fuse into one cell of double value — and because the fused cell drops into the gap it leaves, one placement can set off a cascade that runs the whole board. Every few drops a junk row shoves up from the bottom. Let the stack reach the top and the core burns out.
A column-drop fusion puzzler. Aim a numbered cell at one of six columns and let it fall. Three or more touching cells of the same number fuse into one cell of double value — and because the fused cell drops into the gap it leaves, one placement can set off a cascade that runs the whole board. Every few drops a junk row shoves up from the bottom. Let the stack reach the top and the core burns out.