These slots are the best hidden gems you can find online

When it comes to online slots, the highest popularity doesn’t always equate to the best payouts. We’ve collected some hidden gem slots that might not top the charts, but offer good return-to-player rates and are just plain fun to play.

Gambling may have been around for over a century, but it’s never been more popular than it is today, and that’s in part thanks to the rise and prevalence of online slots. In 2025, there are almost innumerable popular online slots that fans spin on the daily, but the hype around the most popular games might take away attention from some underrated and deserving hidden gems. These underrated online slots can be just as rewarding, if not more so, the most popular versions.

For players who’ve already tried the heavy hitters and are looking to add some variety to their rotation, it might be worth checking out a these lesser-known slots.

The best hidden gem slots for 2025

These are some of the best hidden gem slots that are available to play in 2025 and are definitely worth giving a try if you’re looking to place a fun bet with a good potential return.

Fiesta de Mascotas

Fans who love dogs will enjoy Fiesta de Mascotas’s three-reel setup on a pet-themed backdrop. With wagers starting at just $0.20, this online slot is a solid pick for players looking to dip their toes into classic-style slots without missing out on some modern features. The visuals may appear basic at first, with ducks, fruits, and bar symbols filling the reels, but it fits the theme well enough. The setup is simple with just one pay line, but the medium volatility and layered mechanics give this hidden gem some real replay value.

Fishin Frenzy

Those looking for big payouts on smaller bets may enjoy Fishin Frenzy, which can pay up to 2,000x the base bet players make. That means players can win up to $4,000 on a $20 bet. With five reels and 10 pay lines available, there are plenty of chances to land winning combinations here.

It’s a simple ocean-themed slot with alphabet symbols mixed in, and its real value lies in its bonus features. The game offers up to 20 free games per spin, with extra wins possible during the bonus round.

Stardust

Stardust is the less popular slot twin of Starburst, which takes you on a cosmic journey through outer space with its 40 pay lines all set in a space-exploration theme, allowing players to navigate a nearby galaxy with some big potential rewards.

With high volatility and a healthy 96.59% RTP, Stardust offers the potential for big payouts, capped at a 1,000x multiplier. It’s a good option for players looking to explore a new game that offers an RTP as high as many other popular online slots.

Slayers Inc

Most popular online slots feature similar mechanics, and that can get a bit repetitive for returning bettors. Slayers Inc. flies under the radar with its unique VS multiplayer feature. While it can be a bit tricky for some, it’s a refreshing change that adds variety to the usual slot experience.

During the bonus round, two multipliers face off against each other in a head-to-head battle, with the surviving multiplier applied to the whole reel. These values range from x2 to x500, providing a real chance for big jackpot wins. With a high RTP of 96.38%, Slayers Inc. offers solid payout potential.

Rick and Morty Megaways

Based on the popular animated television series, this slot combines the outrageous characters and fun themes of Rick and Morty with the popular Megaways engine, offering up to 117,649 ways to win. The game’s most notable feature is its free spins method, which include four distinct options: Pickle Rick Free Spins, Federation Wild Spins, Vindicator Free Spins, and Mystery Free Spins.

With an RTP of 97.05% and a max win of 50,000x base bet, Rick and Morty Megaways is definitely one of the top hidden gem slots worth trying when you’re playing online. Just be careful that you don’t get sucked into an episode of interdimensional cable along the way.