Online slots are so varied in terms of theme choices (anything from traditional bars and stripes design to Hellboy), bonus features (anything from zilch to i-Slots, which offer up a bounty of unique, engaging bonus games), and general playability (anything from “spin and wait” to “spin, think, hold, nudge, place that “bonus bet” if you think you’ll spin a winner THEN wait”).

Here on this page, we’ll review some of our favorite online slots, the ones that keep us excited about the ever-changing evolution of the online slots landscape.

Let’s be clear right from the start. I’m not an uber-comic book fan. Not saying that I haven’t enjoyed one or two in my lifetime in my teens, but I’m not a die-hard (not that there’s anything wrong with that). Case in point – I didn’t even know of the existence of Hellboy the Dark Horse comic, until the two Hellboy films directed by Guillermo del Toro were released. After watching the films was I curious enough to go back and visit a few of the comics. I was really impressed by the evocative deco artwork – and this online slot captures that same mood perfectly.

One of the more thrilling aspects of this slot is its bonus game.

Here, your mission is to search for other team members underground and you’ll have to avoid blocked tunnels while encountering strange creatures along the way. There are four levels to this video game bonus game, and if you complete all four of them, you’ll win even more credits.

You can play Hellboy at 32Red Casino.

With one of Rival’s Gaming newest additions, you’ll step in the shoes of a struggling boxer trying to make the big time.

You’ll get to train with weights and speed bags as you get ready to fight for the championship. In the amazingly engaging video game bonus game, you’ll face off against three opponents each with his own distinctive fighting style, weaknesses and strengths, and after each fight, you’re scored on effectiveness, accuracy, defense, style and overall.

You can play Heavyweight Gold at US player friendly casinos such as SlotO’Cash Casino or Pantasia Casino.