Playing online slots is fun, and many slot developers like to experiment by adding various new features and innovative symbols that can help you trigger them. However, one of the symbols has remained an absolute must to almost all online slots, and it is usually referred to as the WILD symbol.

The majority of USA legal slots have some kind of a wild symbol and its primary role is to substitute all the other symbols in the reels, helping you create bigger wins. Therefore, let’s take a look at all the types of wilds there are.

Stacked Wilds
Stacked wilds usually are stacked one on top of the other in one reel, creating a cluster of a sort that will increase your chances of making better combos and winning more lucrative prizes. Nowadays, there are games which also offer diagonally stacked wilds as well.

Expanding Wilds
Expanding wilds simply expand across the reels as you spin them. As soon as you meet certain requirements proposed by the game, you can activate the Expanding Wilds feature, meaning that they will increase in number over time. In other words, the feature can start with one wild and expand across the entire reel after some time.

Sticky Wilds
Sticky wilds simply remain in their position for a number of spins, thus helping you create more combos. These are usually activated as a part of a Free Spins feature, meaning that all the Wilds that you land on the reels will remain there until the end of the feature. Pretty straightforward (and pretty useful, if we might add)!

Replacing Wilds
Some online video slots include features where wilds appear instead of a certain type of ordinary symbol. For example, if you land a 10 symbol three times on the reels and you are lucky enough to activate replacing wilds, these three symbols will become wilds, and help you create more combinations.

There are dozens of other less popular wild features as online slots are currently in their golden era with many game developers exploring their limits. For example, some online slots can combine features presented in this article and give you Sticky Expanding Wilds.

These features are best experienced when tested, so make sure to test slots that have wild symbols. Make sure to check out the best online slots casinos and feel free to claim welcome bonuses in order to boost your experience. Once you register on a casino, try as many slots as possible until you explore all types of wilds and other interesting features.