Turn the tower, not the seed
The golden seed only bounces straight up and down. Drag left or right on the tower, or hold the left and right arrow keys, to turn the whole tower underneath it. On a phone you can also drag along the wooden strip under the board to keep your thumb off the view. When a gap turns under the seed, it drops to the floor below. P pauses.
Leaves, thorns and the smash
Green leaf floors are safe to bounce on. Red segments carry thorns, and landing on one ends the run. Each fall pays more for every floor it passes: the first floor is worth 1 point, the second 2, the third 3. Drop through three floors in one go and the seed starts to glow; its next landing smashes that whole floor, thorns and all, for double points.