The playfield is viewed in perspective from above, with pieces falling into a three-dimensional well. The objective is to arrange blocks so that a complete horizontal layer is formed and removed, creating room for new pieces.

Players move and rotate each piece before it locks. Different well shapes and difficulty settings change the available space and the challenge. Progress depends on maintaining stable stacks, reading depth correctly, and planning several placements ahead rather than simply clearing the highest visible surface.

Plan the lowest and least accessible spaces first, because gaps hidden behind a front layer are difficult to repair. Rotate pieces early while they are still high in the well, then use the available viewpoints to verify their depth.

Prefer flat, stable surfaces over narrow towers. Clear complete layers before the well becomes uneven, and avoid filling a corner unless the current piece or a likely future piece can reach it.