The padlock is the wild symbol and it will substitute for all of the other symbols, except for the scatter symbols, to help and form more winning combinations. As an added bonus, the wild symbol doubles any payouts it helps to form.
The scatter symbol is a red rose.
Landing three or more rose scatter symbols anywhere on the reels awards 15 free spins. Not only can the free spins be retriggered up to 15 times, but during them, all of your payouts will be tripled.
There is a top payout of 9500x for landing five padlock symbols along a payline; it pays 2000x for four, 200x for three and 10x for two. The rainbow and the sun both pay 950x for five symbols, 150x for four, 25x for three and 2x for two. The bird will pay 450x for five symbols, 100x for four, 20x for three and 2x for two. The dragonfly and second bird both pay 250x for five symbols, 75x for four, 10x for three and 2x for two. The mushroom and tree both pay 125x for five symbols, 25x for four, and 10x for three. The two flower symbols both pay 100x for five symbols, 20x for four, and 5x for three. The butterfly and ladybird both pay 100x for five symbols, 15x for four and 5x for three.