Top 5 Slot Machines of 2021
The first part of 2021 delivered a steady flow of new slot releases, with notable titles arriving week after week.
Among the releases were Immortal Romance Mega Moolah from Microgaming, Stacked from Betsoft, and Kings Court Gem Splash from Playtech, among many others. Did any of them make the top 5 2021 slot machines?
Here is our selection of titles rated among the best slot machines at online casinos in 2021.
Gonzo’s Quest Megaways (Red Tiger)

The original Gonzo’s Quest video slot from NetEnt is widely considered a classic and ranks among the most popular games of its kind. Red Tiger reworked it with Megaways in 2021, creating a version some players may prefer. It can offer winning combinations across as many as 117.649 paylines.
The layout uses 6x7 reels, with the Megaways mechanic changing the number of paylines on each spin. Each reel can display from 2 to 7 symbols. Gonzo’s Quest Megaways has a 96% RTP and high variance.
Starburst (NetEnt)

Nearly ten years after its debut, Starburst remains a staple among well-known online slots. Developed by NetEnt, it is a low-volatility game with a 96.09% RTP. Features include expanding wilds and re-spins. Its bright visuals grab attention, while the gameplay makes it memorable.
When a wild symbol expands across an entire reel, that reel locks in place and the others re-spin. This can create exciting winning opportunities, especially since Starburst pays in both directions.
Tiki Infinity Reels Megaways (Yggdrasil)

Tiki Infinity Reels Megaways had recently launched at online casinos when the review was written, yet it had already drawn attention. Interest followed the success of its sister game, Odin Infinity Reels X Megaways. The game combines the Megaways reel system with infinity reels, with a stated maximum payout potential of 10,000x the total stake.
Its medium variance and 96.07% RTP were described as in line with industry standards. Notable features include free spins, multipliers, and a jackpot feature.
Age of Gods: God of Storms (Playtech)

The Age of Gods series is well known, and God of Storms is another entry to consider. This Greek-themed game features 5 reels, 25 paylines, a 96.15% RTP, and low-to-medium variance.
This video slot makes a strong visual impression with its graphics and animation. Features add further appeal, including Wild Wind Re-Spins and a progressive jackpot linked to a pooled network shared by over 20 video slots, as well as a live dealer Age of the Gods roulette table connected to the jackpot.
Money Train 2 (Relax Gaming)

Money Train 2 is a high-volatility game with a stated top payout of 50,000x. The 40-payline title from Relax Gaming lists an RTP range of 96.4% to 98% and includes several bonus features.
Its bonuses include re-spins, multipliers, and a Money Cart round, where each symbol that lands has a special function. The Steampunk setting and detailed graphics round out the presentation.
Conclusion
One of these games might match your tastes. The review awarded all five high marks for their online casino experience and described the titles as difficult for other slots to rival.
Evan Carrington brings more than 12 years of experience in the iGaming industry, specializing in online casino reviews, slot game analysis, and player safety assessments. Their expertise includes casino licensing, RTP, volatility, bonus terms, and withdrawal policies. Combining hands-on reviews with independent research, Evan provides clear, evidence-based coverage to help players understand gambling platforms, their features, and possible risks.