The spins take place in a window of an iceberg floating on the waves (very well animated) of the Arctic or Antarctic Ocean. The penguins stay on top of this iceberg and occasionally they go down at the glacier base to dance and express their joy (the figures of dancing penguins are extraordinary!) for a Big Win or to collect the Bonus Letters from the reels. It is said that a picture is worth 1000 words and thus it is better to see these facts than to describe them in detail using many words.
As for the game and its statistics, the slot is again good. First, there are many features here, although to get into some of them one needs to play like hundreds or even thousands of spins. As common features (which are also pleasant and pay nice) are the instant win (about once every 20 spins an instant win of 3x-50x bet is given) and the extended Wilds on a whole reel (also about once every 20 spins one or more reels turns into Extended Wild). As payouts, from an 11x instant win I won 2.75 pounds, and from 3 extended Wilds I received a “Mega Win” of some 67 pounds! Since the bet for 243 ways is only 25 pence, I woke up suddenly with 60 extra pounds! (Wins from normal spins are enough to keep the balance around the starting amount).
There are two other features here but they are also very rare. First, the Free Spins are triggered extremely hard. One needs to freeze all the 8 letters of the word "Penguins" for the Free Spins to be awarded (you get one letter on reels each 20-30 spins). Then there is another way to trigger some Free Spins: you have to win all the combinations from paytable. I guess there are thousands of spins required for this!
However, as I said I did not find that this slot is stingy with the payouts and the total money won (despite the advertised 93% RTP I easily gathered money here). For this reason, and because the game is full of fun and surprises, I give a high rating to this slot.