Microgaming Slots | Free Slots by Microgaming

Microgaming has pioneered some of the most iconic online slots available. If you enjoy cinematic themes and proven mechanics, Microgaming slots offer an unbeatable mix of classic charm and cutting-edge design.

Microgaming Overview

Founded in 1994, Microgaming developed the first-ever mobile casino software in 2004. In 2022, Games Global acquired Microgaming's distribution business and online games portfolio.

Microgaming’s catalog includes hundreds of titles across every genre imaginable, from fantasy epics to branded pop culture tie-ins. The company is also responsible for launching the world’s first online progressive jackpot network, which has paid out over a billion dollars to date.

Its software is certified and licensed by top regulatory bodies worldwide.

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Awards & Reputation

Microgaming is an industry leader in corporate responsibility, co-founding the eCOGRA certification body to ensure fair play across the industry and supporting numerous charity initiatives through its PlayItForward program.

Over the past 30 years, Microgaming has earned numerous accolades, including:

Notable Microgaming Free Slots & Their Core Features

Below are five of Microgaming’s most celebrated slot titles, each representing a defining moment in the studio’s incredible legacy.

Immortal Romance

  • Theme: Vampires, Romance
  • Format: 5 reels, 243 ways to win
  • RTP & Volatility: ~96.86% RTP; medium to high volatility

A cult classic that blends dark romance with gothic storytelling, Immortal Romance is a narrative-driven masterpiece. With Wild Desire features and haunting music, it’s one of the most beloved slots ever made. 

Players unlock character-specific bonuses through the Chamber of Spins, revealing storylines for Sarah, Michael, Troy, and Amber. 

Hitman

  • Theme: Action
  • Format: 5 reels, 15 paylines
  • RTP & Volatility: ~95.8% RTP; medium volatility

Based on the iconic video game franchise, Hitman combines stealth, tension, and precision in a slick slot experience. Its polished presentation and faithful adaptation make it a long-standing favorite among adventure fans.

Features include Contract Bonuses, Wild Expansions, and Free Spins with doubled wins. 

Thunderstruck II

  • Theme: Norse Mythology
  • Format: 5 reels, 243 ways to win
  • RTP & Volatility: ~96.65% RTP; medium to high volatility

A sequel to one of Microgaming’s earliest hits, Thunderstruck II expands the Norse saga with four god-themed bonus rounds: Valkyrie, Loki, Odin, and Thor. The Great Hall of Spins adds depth and replay value, while its dramatic soundtrack and lightning-charged visuals have made it a player favorite for over a decade.

Nauticus

  • Theme: Underwater
  • Format: 5 reels, 25 paylines
  • RTP & Volatility: ~96% RTP; medium volatility

Dive into the deep with Nauticus, a vibrant yet serene oceanic slot filled with submarines, treasure, and mysterious sea creatures. The game’s Submarine Bonus Round and Expanding Wilds create a sense of discovery and reward.

Game of Thrones

  • Theme: TV, Fantasy, Dragons
  • Format: 5 reels, 243 ways to win (or 15 paylines version)
  • RTP & Volatility: ~95.9% RTP; medium volatility

One of Microgaming’s most successful branded titles, Game of Thrones brings Westeros to the reels, with stunning sound design and official HBO visuals. Players align with one of the Great Houses for different free spin rewards, each offering unique volatility and multiplier potential.

Microgaming’s Responsible Gambling & Safety Features

Microgaming operates under some of the most respected gambling licenses in the world. eCOGRA independently tests all Microgaming games, the industry watchdog it helped create, ensuring fair RNG performance, accurate RTPs, and complete transparency.

The company actively promotes responsible gambling by partnering with organizations, such as BeGambleAware, Gambling Therapy, and Ygam. Players can access responsible gaming tools through licensed casino partners, including deposit limits, self-exclusion options, and time reminders.

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