광물 표본장
How this collection works
Exchange neighboring mineral specimens to form straight sets of three or more. Four create a line pulse, five create a prism, and crossing sets create a compact shock stone. Finish the field objective before your moves run out.
Field notes
A tide rotates one complete row after every fourth valid exchange. Reserve one ordinary sample early, then trade it into a difficult position later. Chain reactions score up to five times their base value.