Layered Locks

I. Core Operation:​
Control Method: Single-finger touch operation. Tap any screw on the screen to unscrew it from the wooden plank.​
Placement Rules:​
If moved to the corresponding color-specific box above (exact color match), tap to place it directly and complete sorting.​
If the color doesn’t match or the corresponding box isn’t available yet, tap one of the 5 empty slots below for temporary storage (1 screw per slot).​
Operation Tip: Allocate empty slots wisely to avoid running out of storage space. Prioritize placing matching screws directly into their respective boxes.​
II. Core Mechanic:​
Sorting & Unlocking Rule: All screws of the same color must be placed into their corresponding boxes (including those temporarily stored in slots) to unlock the wooden planks associated with that color (planks will automatically fall off or disappear).​
Temporary Slot Limit: Empty slots are for temporary storage only and cannot be occupied long-term. If all 5 slots are full, no new screws can be unscrewed—you must first organize the screws in the slots (transfer to corresponding boxes or rearrange storage).​
Disassembly Logic: Planks are cross-fixed by screws of different colors. Follow the sequence: Unscrew independent screws first → Prioritize matching & sorting → Temporarily store remaining screws → Unlock planks to avoid planks tilting and blocking boxes or slots.​
III. Game Objective & Failure Conditions:​
Core Objective: Within the time limit (or unlimited time), place all screws into their matching color boxes and disassemble all planks to complete the level and unlock the next one.​
Failure Conditions:​
Time runs out with unsorted screws (including those not transferred from temporary slots);​
Screws fall outside the boxes and empty slots due to operational errors;​
All 5 empty slots are full, making it impossible to unscrew key screws or organize slots, resulting in a level standstill.​