Dark Hearts plays with 243 ways to win too, but the Wild symbol, the Mouth, is more of a dead Wild symbol! It doesn't pay anything for itself, it doesn't double any wins with it, neither does it expands into a full Wild Reel - that really sucks! The Key is the Scatter symbol, yet another non-paying symbol, that only serves to trigger 3 choices of Free Spins games by getting 3 or more of the Keys. The highest paying symbol pays only 1250x the line bet, whilst the rest pays down to 45x the line bet, for any 5 of each kind. A very low paytable, almost extremely low!
The 3 choices for the free spins are: Viktor- awarding 30 free spins with a 1x multiplier, Willow - awarding 15 free spins with a 2x multiplier, and Marcus -awarding 10 free spins with a 3x multiplier. All are way below the standard satisfactory free spins/multiplier combinations, and needless to say, none of the 3 choices could ever produce nice big wins! Without any Expanding Wilds or full Wild Reels, without any random ala 'Wild Desire' feature, I simply cannot see how Dark Hearts can ever make it big!
Playing the game over many hours, over several thousands of spins, my presumption proved to be correct! All the payouts in the base game were simply ridiculously low, whilst you really need to play the free spins with the Marcus' 10 free spins with 3x multiplier option in order to get any decent wins. The absence of Expanding Wilds and Wild Reels really made a big difference for Dark Hearts.