As we hit the halfway point of December 2025, the leaderboards at RTG-powered casinos are showing a very clear trend. There is a common saying in the casino world that the most played slots are often the one that pay out the most, and that isn’t just a myth. Because these games see a massive volume of spins, the progressive jackpots are triggered more frequently and the “payout velocity” stays high.
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Most Paying Christmas Slots
Our mid-month list for December highlights the three games currently dominating the payout charts:
3. Rudolph Awakens Slot
Rudolph Awakens is a fan-favorite installment in the “Rudolph vs. Santa” series by RealTime Gaming (RTG). Released in late 2019, it subverts the traditional “jolly” holiday theme with a gritty, humorous take on a reindeer rebellion.
Game Overview
- Developer: RealTime Gaming (RTG)
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Layout: 5 Reels, 3 Rows
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Paylines: 30 Fixed Lines
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Max Payout: 50,000x the bet per line
2. Naughty or Nice (Probably the Hottest Slot)
Naughty or Nice is a certified classic that definitely earns its “hot” status, though maybe not for the reasons you’d expect. While it has solid mechanics, it’s one of RTG’s most popular slots primarily because of its cheeky, adult-oriented theme—swapping out the “silent night” for Santa’s much more playful assistants.
If you are looking for the key mechanics or why it’s trending this December, here is the breakdown:
Game Overview
- Developer: RealTime Gaming (RTG)
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Layout: 5 Reels, 3 Rows
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Paylines: 50 Fixed Lines
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Max Payout: 50,000x the bet per line
1. Big Santa Slot (The Christmas Classic)
Rounding out the top three is Big Santa Slot. This game captures the warm, big magic of the holiday season. Unlike the tough rebellion of Rudolph or the fun vibes of Naughty or Nice, Big Santa is a bright, feel-good slot. It focuses on one thing: big wins. Everything in this game is made to be “big.” This includes the cartoonish, high-definition graphics and the large symbols on the reels.
If you are looking for the key mechanics or why it’s trending this December, here is the breakdown:
Game Overview
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Developer: RealTime Gaming (RTG)
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Layout: 5 Reels, 3 Rows
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Paylines: 25 Fixed Lines
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Max Payout: 50,000x the bet per line
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Volatility: Medium (a steady balance of frequent wins and decent payouts)
The Festive “Bonus Boost”
A thing that probably won’t surprise you then is that all of these are Christmas-themed. This time of year is very important for the entertainment industry. Casinos know how to get people in the holiday spirit.
To help you get started with these trending titles, most RTG-powered casinos are rolling out special seasonal offers. Here are the types of bonuses you can expect to see this December.