The cost of locking wild is reasonable, and your bet will increase in the next spin, but the return may increase your chances of winning. The cost of locking the field will also vary depending on the field location on the reel. If the lockout cost is too high, you will receive a warning message asking if you are sure you want to continue.
To automatically lock the new version when it appears, check the box on the game interface. You can select and deselect wild animals as needed to make the game interactive and based on the player. Any new wildness implemented during the free spin will also lock the duration of the free spin. All wins are multiplied by the line bet you triggered when you spin for free.