Last time out, you might remember our best new online slots of the week featured several games that pushed the boundaries of reel layouts.

This week’s slots roundup continues that theme. First up, we’re braving the fiery volcano for Ainsworth’s Krakatoa Lucky Break. It’s a fresh 5-reel game with progressives, free spins, and big wild multipliers.

Next up is EGT with another 21st-century take on the classic video slot. 27 Wins features lots of animated fruit, double symbols across the board, and the chance to win one of four progressives.

Hidden reels seem to be a feature in many of the best new online slots. Elk Studios’ Ice Wolf has a 5-reel setup which can expand as ice blocks melt. Sticky wilds, respins, and 50x multipliers await the player who is brave enough to wait for a thaw.

Finally, we revisit an arcade classic with Tetris Extreme from Red7. Earn prizes for cluster wins, and trigger free spins with big multipliers if you clear enough lines.

Those are our four focus video slots for this week. Let’s get our coins ready and hit Spin as we take a closer look.

Krakatoa Lucky Break by Ainsworth

Australian “pokies” giant Ainsworth is no stranger to a nature-themed game or two. Who can resist the charms of Winning Wolf, Safari Spirit, or the outback-themed Kanga Cash?

New to the Aussie developer’s pile is Krakatoa Lucky Break. Set in the midst of the legendary volcano, Krakatoa Lucky Break is as volatile as the lava flows raging beneath the iconic landmark.

The game features five progressives and enough bonus features to satisfy the most variance-hungry gambler.

On the face of it, Krakatoa Lucky Break is a standard 5-reel pokie machine, just like you’d find in an Aussie outback bar or casino. But delve a little deeper and you will find scatters, free spins, and big wild multipliers.

Hitting six or more scatters triggers a free spins bonus game where ‘+1’, ‘+2’ and ‘+3’ symbols help to retrigger more free games. Wilds can appear too, and they’ve brought along their multiplier friends for company. It’s possible to hit stacked wild multipliers, each worth 1x, 2x, or 3x.

Look out for the Lucky Break symbol. When that appears, you will earn a multiplier worth 1x-100x your total stake on that spin. However, strike it lucky and you can win one of five fantastic progressive jackpots. Give the game a try for free here at VSO. 

27 Wins by EGT

Bulgarian slots developer EGT has surely deserved a place in our new slots of the week roundup with the 27 Wins slot.

27 Wins is built on a classic 3×3 reel setup and looks every part an EGT slot. There are 27 paylines (which explains the title), and all symbols appear as doubles to improve your wins.  

As well as double icons, there are two interesting bonus symbols to look out for. The ’27 WINS’ symbol will trigger a mystery cash prize when you land three of them on the reels.

Also look out for the joker hats which act as wild symbols. These will substitute for all regular symbols in the game, and they look great as they dance on the reels.

If you have played any EGT progressive, you’ll know all about the Mystery Cards Jackpot. It’s a linked progressive jackpot that is spread across dozens of participating games.

At random, you can activate a bonus game that gives you the chance to win one of four progressives: clubs, diamonds, hearts, or spades. These prizes slowly increase every time someone plays a Mystery Cards Jackpot slot online.

The bonus game consists of a grid of symbols. Keep selecting hidden squares until you unearth three matching card suits. You will then win that corresponding jackpot.

27 Wins looks clean and slick, a marked improvement on some EGT slot releases. Give it a play for free and see what you think.

Ice Wolf by ELK Studios

ELK Studios have built up a reputation for making beautiful-looking games with top, lush graphics and animation. And if you’ve played the Gold series of games like Ecuador Gold and Voodoo Gold, you’ll know ELK Studios are all about top bonuses too.

Ice Wolf deserves a place in our best new online slots of the week list for its main feature alone. The game starts off as a 3×6-reel slot, but hidden reels can be revealed to increase the overall playing area. In fact, with the whole reels exposed, you can play on over 78,000 possible win ways.

Ice Wolf is a new addition to what is a crowded Norse-themed slot marketplace. The game is set in frozen Scandinavian environs where vicious wolves prowl the forests.

The ice wolf himself can appear as a symbol. When he does, he will trigger a wolf pack that clears away ice on that column, leaving a trail of ice-cold wilds behind. Once the ice has been cleared above the regular sets of reels, the top and middle sections of the reels come into play.

Keep an eye out for big multiplier symbols. Multipliers in this slots game range from 2x to 50x, but you can also dig deep for +1 spin symbols, where wilds become sticky.

There are plenty of ELK Studios fans in the VegasSlotsOnline offices. Check out Ice Wolf for free and discover why.

Tetris Extreme by Red7

Finally, we revisit an arcade classic for our last of the best new online slots of the week. Tetris Extreme has been released by Red7, an independent studio that is now part of the Scientific Games brand.

The slot is based on the legendary puzzle game where you must line up groups of tetrominoes (blocks of four squares of the same color) to earn prizes.  

For every line of blocks you land, the meter on the left of the screen is filled. Clear 15 lines and you trigger a free spins bonus. You will also earn line multipliers worth 1x to 50x your stake. The more lines you accumulate, the more you win. You can also hit large clusters of 9 to 25 matching colored symbols for extra big wins.

We particularly like the Mega Drop feature in this game. At random, the Mega Drop will hit and you can activate one of three progressive jackpots: Minor, Major, or Epic.

With an RTP of 94.09% excluding the Mega Drop to 96.09% including it, Tetris Extreme might be worth a look. Check out the game for free at VegasSlotsOnline, and relive those endless wasted hours on your GameBoy or PC.

For the best new online slots of the week and more exciting games, make sure you visit our Free Slots page!