One of the more unique gameplay mechanics around at the moment is the PopWins feature from Avatar UX. This feature gives slots the ability to expand the reels and score some big wins. The latest title to feature this is PiggyPop, which has been released as part of the Yggdrasil Master’s Program. The slot centers on a group of filthy-rich pigs who want to give you some big payouts when you spin the reels at the best online slot sites. Let’s take a look at what else is on offer in this PiggyPop online slot review.

Thematically, there are very close links between this slot and the Piggy Riches series by NetEnt and Red Tiger. The game is all about the lives of some rich pigs in their mansions, and the visuals capture that decadence perfectly. The slot is set inside what is either a mansion or a bank vault with glitter literally dripping down the reels. All of the symbols are the titular piggies, and the character design is spot on. The soundtrack has a swanky swinging feel that really captures the riches of the piggies.

The biggest selling point of PiggyPop is its innovative gameplay. The game starts out on a 6x4 grid with an impressive 8,192 different ways to win being active. Whenever you land a win, the PopWins mechanic changes the winning symbol into two symbols and expands the reels. If more wins happen, then this will continue. Each reel can expand to be up to 6 spaces high, with the paylines potentially increasing all the way up to 524,288, which is quite the eye-watering amount.

As far as stakes go, the minimum that a player can bet in this game is $0.20, and the maximum is $40, which is a solid enough wagering range that should satisfy most players. Like most top online slots, there is also an Autospin feature if you want to kick back and let the piggies earn their money.

With most top online casinos offering slot games for mobile, it’s not surprising that PiggyPop has been developed using HTML5. This means that it is compatible with different devices and platforms. The slot can be played on both phones and tablets, and it runs smoothly on most popular mobile browsers, including Google Chrome and Safari at the best slots sites.

There is a lot to like about the bonus features on offer here. PiggyPop is a slot with plenty up its sleeve. If you can fully expand all of the reels during the base game with the PopWin feature, then you will trigger the game’s Free Spins Round.

At the start of the free spins, you can spin the gamble wheel to determine how many rows high the reels are going to be. During the round, the reels can expand all the way to eight rows high, giving a mind-blowing total of up to 524,288 ways to win.

During this round, players are given three free spins. Anytime a win is secured, the free spins will reset, and this can continue with no limit. The reels will reset to the size of the smallest reels after each spin, which means you can end up playing on a fully extended 8x6 grid if your luck is in.

There is also a Progressive Multiplier in the round that increases up to 4x and goes up every time you manage to score a win. This doesn’t reset after each spin, either. If you want to sink your teeth into the bonus straight away, then you can do just that for a total of 20x your total stake.

The RTP of PiggyPop is rated as 96.00%, which is around average and a little disappointing given the potential of the slot. The maximum you can here is 10,609x your stake. The game has been given a high volatility rating from Yggdrasil.

PopWins is always a popular mechanic, and Yggdrasil have hit a home run again with the PiggyPop slot. While the theme may be a little derivative, the slot bonuses features in this game compliment each other perfectly, and the Free Spins Round can lead to some really nice wins if the slot gods are working in your favor. The PopWins mechanic and the increased number of paylines continue to be a success for the developer, and this is one of the finest to utilize it yet.