Top 3 Halloween-Themed Slots in 2025

Cold winds have started rolling in, and grey clouds blanket the skies: October is here. With it comes the spookiest holiday of them all, Halloween! People aren’t the only ones getting festive. As is tradition, software providers have jumped on the fright train with Halloween-themed slots, with zombies, ghouls, and vampires flooding the reels.

In this round-up, we’ll go over the best slots that embrace the spooky mood in 2025. The highlighted games not only match the theme but are also fun to play.

Big Bass Halloween 3

Pragmatic Play is no stranger to putting the Big Bass fisherman in all kinds of situations. This time, a quick trip to buy bait for his next venture turns out bloody as zombies swarm the building. With a horde of undead surrounding the building, he’ll have to stock up on supplies and use his axe to make his way out. Let’s just hope those zombified fish are safe to eat!

Big Bass Halloween 3 doesn’t change a working formula. The gameplay and features will be immediately familiar to anyone who played a slot in this series before. Wilds, Money Symbols, and Free Spins make a return, allowing players to win up to 5,000x their stake. Pragmatic Play also offers two bonus buy options and an Ante Bet feature, which increases the odds of landing free spins at the cost of raising your total bet.

The game has a high variance and an above-average RTP of 96.50%. It is a solid, familiar all-around experience that’ll have you chomping at the gills for more.

Fish Tales Halloween

It seems the idea of zombie fishing is more popular than we expected, as Pragmatic Play wasn’t the only one to try their hand at it this year. There’s also Booming Games’ Fish Tales Halloween, which uses the atmosphere instead of a crowd of zombies to build a creepy atmosphere. After all, who wouldn’t be on edge fishing in a lake full of eyeballs, while a thick green fog envelops the surrounding forest?

If you can muster up the courage to catch zombie fish, the game has plenty of potential. It uses a 5×3 playing area with 20 paylines and has a whole host of exciting bonus features. Barrel Boost can randomly add Scatters to the reels, increasing the likelihood of activating the Free Spins bonus. Free spins, in turn, activate Cash Collection and Monster Bass features, increasing the likelihood players land the 5,000x top prize.

The RTP in Fish Tales Halloween is 96.10%, which is quite good. We’ve had a blast playing this game, and plan to revisit it in online casinos even after Halloween runs its course.

Castle of Terror 2

Of course, it’s not all zombie fish this year. Big Time Gaming pulls through on a more traditional horror experience with Castle of Terror 2. The sprawling castle hides the experiments of a mad scientist, and the graveyard outside makes it clear a fatal outcome awaits all who enter. Will you succeed where others have failed, or will you end up being just another brain in a jar?

Castle of Terror 2 features a 5×4 grid with 1,024 ways to win, replacing traditional paylines. A single Scatter appearing can grant one of five bonus re-spins, each with a different effect. Meanwhile, two or three Scatters will award 10 free spins, during which a Win Multiplier is active. It increases after every winning spin, boosting player payouts. You also get the benefit of two or three bonus effects while free spins are active.

There’s a 20,160x top prize up for grabs for those bold enough to try their luck against this highly volatile game. The 96.48% RTP is top-notch, giving you a fighting chance against the mad scientist and his creations.