01
Scan before you spend
Begin with the objective and the least reachable squares. A row clear, colour effect or shuffle has value only when it changes that specific problem.
An earned booster already in inventory is different from a purchase offered after failure. Keep those decisions separate so momentum does not become a checkout shortcut.
Blocker
The layer or lane that restricts the board.
Reach
How many directions can affect the target.
Timing
The board state in which an effect does useful work.
Cost
What leaves inventory or requires payment.
02
Protect the setup
Special pieces are easier to combine in open central lanes. Keep them movable, trace the fall after a nearby match and avoid placing one inside the other's immediate blast path.
If an objective is almost complete, direct use may be stronger than a perfect pairing. A combo is a method, not the goal printed on the board.
03
Pause at the continue screen
A nearly finished level can make an added-move offer feel unusually urgent. Set a spending rule before play and read the final price, contents and expiry on the checkout screen.
Leaving a board unfinished is a normal stopping point. A reward loop should not turn a casual session into a purchase made only to preserve momentum.
Sources