The mystery will start as soon you as you start the Mystery Joker slot made by PlayNgo. You can play this slot machine for free in our online casino. Play with 3 reels and 5 pay lines that will give you all together a low bet and still very high prices. Try to score 3 scatter symbols to start the free spin bonus with 10 spins. The slot Mystery Joker is played with real money and a bonus is coming with it when you press the big button under this video slot.