NetEnt has gone for a playful theme by turning pigs into astronauts and sending them off into space. However, NetEnt’s When Pigs Fly slot machine is also deserving of attention for the sheer innovation on display, with the number of symbols changing after winning spins. See it in person at the NetEnt casinos below.

Best Places with When Pigs Fly

Rizk Casino

– This is a good place to start for its 200% welcome bonus and on-going rewards that can be won from the Wheel of Rizk.

The Grand Ivy

– You can then go even grander by claiming Grand Ivy Casino’s 100 free spins and £1,500 worth of deposit bonuses.

Slot Design

The cartoon graphics of the When Pigs Fly slot are colourful and playful, but the actual interface is arguably more attention-grabbing. This is due to the slot showing a middle reel with five symbols, reels two and four with three symbols, and reels one and five with one symbol. From the outset, there is a strong element of intrigue for players.

Game Rules

When Pigs Fly will let players set a coin value (£0.01-0.20) and betting level (1-10). At its lowest, the slot will let players wager with £0.50, so it can feel like playing a slot with 50 paylines. However, it must be pointed out that this slot does not have paylines.

Instead, NetEnt has designed a slot where symbols are only required to land in neighbouring reels to create winning matches of three or more. As a reward for winning, the slot will open the reels and add new symbols for successful wins. During play, there are up to 3,125 ways to win and a maximum jackpot of 480,000 coins.

Special Features

The wild symbol kicks off the special features of this When Pigs Fly slot review. Players can look out for it appearing on all reels except for the first one, while it can also substitute for all symbols.

The main special feature is the changeable layout of the reels, with players rewarded by having new symbols appear when they earn consecutive wins. The overall aim is to create a streak of six wins and send the free spins counter to zero.

When the free spins counter falls to zero, players will receive eight free spins for their efforts. Meanwhile, the slot will be entirely open and there will be 3,125 ways of winning.

Playing Strategy

Players can keep the same strategy if playing When Pigs Fly slot on mobile or desktop, but what should not change is the playing strategy. Because the symbols in the base game are not overly profitable, it is smarter to stake lower amounts and try to unlock the free spins and complete array of symbols.


Ultimately, When Pigs Fly might become more important for its innovative design than for its popularity alone. That said, it is a fun slot with a quirky theme and it is well-designed. It is weighted towards triggering free spins, but the challenge can be met with a patient strategy.

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