Seven shapes descend into a narrow well, and your task is to rotate and arrange them into complete horizontal lines. The rules take seconds to understand, yet a useful placement must consider both the current piece and the space left behind.
As the stack rises and the pace increases, small compromises accumulate into serious problems. The Game Boy version's spare presentation keeps attention on this continual negotiation between immediate survival and future possibility. A clean well can feel wonderfully calm; a buried gap can feel like unfinished business. Few games make such a simple action sustain so much concentration.
