Each Lightning Link video slot contains two special features. The first is a free spin bonus game with a "super symbol". Click on the three scatter symbols and you will get six or more free spins, during which a large 3x3 symbol may seem to cover all of them in the middle three reels. This can even cause the entire screen to be covered by wild symbols, which can result in a large number of prizes.
Many slot machines share features that players are very familiar with, similar or even the same as in other games. This is usually the most realistic form of flattering: once a company finds an effective bonus idea, many others will inevitably try to do something like it.