This amazing 20-payline video slot is inspired by the same-name series of comic books created by Mike Mignola. The reels are populated by the main character himself with his horns filed off, Karl Ruprecht Kroenen (a villain in the Hellboy universe) who always wore a gas mask, and other comics characters. Featuring an engaging multi-level bonus game, the slot is a popular choice for many players who like superhero-themed slots and big wins.

Selecting from coin denominations and the number of coins per line, you can make a wager from $0.20 to $50 per spin. The maximum coin denomination in the game is $0.25. The top three prizes are $25,000 (five wilds), $12,500 (five Hellboy symbols) and $5000 (five Liz Sherman symbols).

Bonus features

Three scatter symbols depicting the Right Hand of Doom activate an awesome-looking Underworld Bonus game where you can win over 33,000 coins. Your ultimate objective in the bonus round is to locate the Relic of Power. Each of the four levels have a tunnel with 5 doors. You are to select any door that would reveal a random coin award or the Win All sign; in either case, you progress to the next level, unless the door of your choice shows the Blocked sign that ends the feature. On completing successfully all the four levels, you are taken to the Chamber of Fire where you will choose a relic and earn an excellent coin prize.

There is also a Super Mode which is triggered randomly at any time in a base game. You are awarded 10 free spins, during which 3 random symbols will become wild and stay in place until the end of the Super Mode.

A wild symbol is represented by the slot’s logo. The wild acts as a substitute for normal icons and doubles payouts when substituting. Ultimately, every winning spin is followed by an optional gamble round that you can skip and continue spinning the reels.