The slots are indeed wild, and this is the same, because whenever you happen, you will appreciate them. It is also possible to get two or three at the same time, which makes it very convenient to get a bigger victory.
In the end, this slot is definitely the whole of the multiplier. From the first rotation and winning you will see the meter on the left. Each successive victory doubles the multiplier, starting at 1x and then moving up to 2x, 4x, 8x, 16x, and finally 32x. As long as you continue to win, the multiplier will increase or remain at 32 times, which is the highest choice.