We head into Spring with another cool collection of the best new online slots of the week. Yet again, it’s a mixed bag of new slots from the hottest online casino developers. Plus, you can play all the best new online slots for free right here.
Let’s kick off the best new online slots of the week with The Dog House: Royal Hunt. Pragmatic Play’s latest dog-themed slot offers wild multipliers and random free spins.
Smash Street Wilds is the newest high-volatility slot from DreamSpin. Hit those scatters to trigger free spins or one of five exciting wild enhancers.
Big Mammut is the newest online slot from one of our favorite developers of 2025: Spin2Win. Hit stacked sabre-tooths and woolly mammoths to win the biggest prizes.
We round out the best new online slots of the week with Mermaid Mighty Reels from Light & Wonder. Win a spin on the bonus wheel for free spins or multipliers.
Don’t forget, you can play all the best new online slots of the week for free. Simply click the links to play the hottest new slots in your web browser.
The Dog House – Royal Hunt by Pragmatic Play
Win up to 8000x in The Dog House – Royal Hunt by Pragmatic Play. Gather up the pampered pooches and land multiplier wilds for the biggest wins.
We begin our round-up of the best new online slots of the week with The Dog House: Royal Hunt from Pragmatic Play. It’s a high-volatility slot that’s perfect if you’re a dog lover or just a fan of well-made games.
Wild multipliers worth 2x to 3x can land on the same reel. Multiple wilds can accumulate for even bigger wins.
You trigger free spins with three scatters on the correct reels. Free spins are random, but wilds remain sticky throughout the bonus feature. Plus, there are random wild multipliers on each symbol when it lands.
High-variance online slots have been Pragmatic Play’s stock-in-trade in recent years. The Dog House: The Royal Hunt is another example of a volatile Pragmatic Play slot that delivers on bonus action.
The slot graphics are superb and have a royal theme. We particularly like the Rottweiler decked in a gold crown and monocle. There’s even something for pug fans with a little pooch decked out in a top hat and waistcoat.
Whether you have a four-legged friend or not, give The Dog House: Royal Hunt a walk for free.
Smash Street Wilds by DreamSpin
Hit the mean streets in Smash Street Wilds from DreamSpin. Spin the reels and trigger one of five bonus modifiers, including stacked 2x wild multipliers!
DreamSpin’s Smash Street Wilds is like a breath of foul air in an otherwise sunny spring. Of course, we mean “foul” in the best sense, as this streetwise slot offers plenty of deliciously evil gameplay.
Smash Street Wilds is a six-reel slot with just 15 fixed paylines. However, there are so many modifiers you won’t worry too much about the lack of win lines.
Wilds can smash into the reels on any spin. These reveal wild multipliers that are applied to your payout.
In addition, wild symbols can appear as walking wilds. They convert adjacent symbols into more wilds, which move horizontally or vertically up to three spaces.
We love the bonus trail feature as well. You unlock bigger and better modifiers by hitting 2–5 scatters. Trail positions include enhancers such as free spins, super free spins, and “mega” free spins. Feature respins, meanwhile, may activate walking wilds, a wild reel, or the removal of low-paying symbols.
It’s good to see volatile slots with a decent RTP. If the 95.5% RTP in Smash Street Wilds doesn’t impress, the range of wild modifiers will. Give the slot a spin for free here at Vegas Slots Online.
Big Mammut by Spin2Win
Go back to the Ice Age in Big Mammut from Spin2Win. Play 1024 ways to win and trigger ten free spins in the all-action bonus round.
Italian developer Spin2Win has been growing its impressive roster of slots in the past couple of years. Big Mammut is the newest five-reel slot to hit the market and joins the likes of Spin2Fighter at online casinos.
Spin2Win’s trademark slick cartoon graphics are on show in Big Mammut. It’s an Ice Age-themed slot where stacked sabre tooths and expanding elephants mix with scatters.
You play 1024 ways to win, which means you can rack up multiple wins if you match symbols on adjacent reels. Plus, wilds appear on reels 2 and 4 for added combo mayhem.
You activate 10 free spins by landing scatters on reels 1, 3, and 5. Free spins carry a 2x multiplier every time you hit a winner. In addition, you can retrigger the free spins by hitting extra scatter symbols.
Spin2Win won’t win awards for innovative slot features. However, we are big fans of the developer’s range of instant-win games. For instance, Spin2Fighter is a gamified version of Street Fighter where you win cash prizes by landing blows.
Big Mammut is the game for you if you want no-nonsense five-reel slots with free spins. It’s on par with Spin2Win’s Christmas-themed Crazy Gems in simple gameplay and awesome wins. Plus, you may have a shot at winning the Super Jackpot at participating casinos. Give the slot a try for free today.
Mermaid Mighty Reels by Light & Wonder
Light & Wonder rounds out our best new online slots of the week with Mermaid Mighty Reels. Trigger stacked symbols for big wins, or spin the bonus wheel for premium multipliers. It’s an online slot fit for Poseidon himself.
Light & Wonder’s excellent online slots roster continues to grow this month with the release of Mermaid Mighty Reels. You can play the game in the basic mode or choose the Premium Play upgrade for an additional stake.
You trigger the Premium Play wheel when you add the extra bet. Spin the wheel to land multipliers or free spins.
Alternatively, you can activate multipliers in this underwater-themed slot by landing pearls on reels 2–5. Pearls also appear in the game’s free spins bonus. The top three reels are revealed (they’re blocked in the base game), and expanding wilds are triggered.
You may also release the blockers by hitting a double wild during the base game. The wild symbol then expands to fill the entire six-row game area. Plus, any additional wilds that appear will expand to full height.
Light & Wonder have always packed their slots with bonus features and volatility to boot. Mermaid Mighty Reels is no different, and there’s even a gamble feature for extra jeopardy. Dive into the ocean and give Mermaid Mighty Reels a play for free today.
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