Mystery Ghost Symbol. The Ghost Pirates is a 5 Reel, Pay-line Video Slot from Net Entertainment. You can play The Ghost Pirates at online casinos such as Leo Vegas. Halloween is a perfect time for immersing yourself in ghoulish ghosts and the terrifying undead. The Mystery symbol will appear randomly, transforming into other symbols. This ghoulish feature can aid in getting you winning. Ghost Glyph. Ghost Glyph Slot The Ghost Glyph is a symbol that appears after a winning tumble. Steel your nerves for a Haunted House. Find them. LeoVegas · Sloty Casino · [HOST] · Genesis Casino. Download the LeoVegas mobile app After you have taken up the cause of Ghost Castle, you will be ready to experience all of this game's ghoulish delights. All the expected guests have arrived - Mummies, Frankensteins, Jack-o-Lanterns, ghosts and ghouls along with Witch Scatters, Wilds and Free Spins. .