Every premium symbol in the slot comes from the song the Lizard in a bottle, Scorpion and alligator smile even the wilds are angels/devils. Another fun fact is the 40 hearts is to represent 40 days lyric in the song. The scatters are displayed as shacks from the lyric "living in a shack in a one horse town". They've even put Bonanza music very quietly in the background as the shack in the slot is the Shack from the background on Bonanza.
The objective of Lil' Devil is to collect hearts for every 2 shack scatters you get one heart you must collect 40 of these for the heart stopper bonus round. Collecting 3 Scatters gives players access to the ordinary bonus round you can choose from 2. The bonus rounds are Be My Angel(similar to gates of hell from Danger) and Dynamite Lover. The Be my Angel bonus is very high variance you will get a really bad win or a very good win. Once the player clicks the bonus begins with 7 free spins and you are given a special symbol anything from 9 through to the purple heart. Every time a player collects one of their special symbol they receive a wild in the middle 4 reels collecting 4 wilds on one reel gives you a retrigger. Now, this is a special part...If you collect 4 wilds on either of the middle two reels you get a multiplier and each subsequent spin your multiplier increases by x2 you can if very lucky get 2 of these multiplier wilds and this can increase the multi up to a whopping 12*12=144x multiplier this can stay until you finish the bonus. If lucky enough to get this your payday can be stratospheric and lead to monstrous sums of cash.
Dynamite lover is very different your multiplier starts at x1, starts with 12 free spins and increases every spin you hit a wild in the combination. Retrigger of 6 spins can be obtained with 3 or more scatters (6 free spins added on for every additional scatter) the scatter pays are also multiplied by the current multiplier the player has reached. I've had around 50 spins as it did a retrigger with 5 scatters! Both bonuses can pay but I'm very sure your odds of a massive win are on Be My Angel.
Heartstopper Explained: Once you collect 40 hearts you are given the option of Be My Angel with a purple heart and one additional special symbol or a 5x start on the Dynamite Lover side. I would favor the Be My Angel side but the safer option, as a rule, is Dynamite Lover. The bonuses play out exactly the same as described above except your add ons are a lot better.
But the real reason we play Lil' Devil is for the potential. This 4096 ways Juggernaut with heaven knows how much x possible. I have personally seen wins as high as 67,000x bet on this game(YouTube video) Lets put the max exposure within the region of at least 80,000x possibly even near to Dead or Alive 2 max win. If you want excitement, massive wins possible (and you enjoyed Danger) play this slot!
Can be prone to some errors which can infuriate players. I favor playing it on mobile for this reason.
Once you reach the Heartstopper it has no guarantee to pay monster. It can be absolutely dreadful have seen both sides of the coin.