What Is Avalon II?
Avalon II by Microgaming is a 2014 Arthurian legend slot widely considered one of the greatest high-RTP high-volatility slots ever made. With a published RTP of 97.11% and an eight-chamber free-spins progression system (Misty Vale, Lake of Legend, Whispering Woods, Dusky Moors, Forest Falls, Snow Valley, Sunken Treasure and Realm of Riches), it is a landmark release.
The 97.11% RTP combined with high volatility is an exceptionally rare combination. Most high-volatility slots sit at 95–96% RTP. Avalon II's combination of high RTP, eight progressive free-spins chambers and the Quest for the Grail narrative framework makes it one of the most mechanically ambitious slots ever created.
RTP & Volatility
Avalon II carries a published RTP of 97.11%. High volatility means wins are less frequent but can be significantly larger, rewarding patience.
RTP is a theoretical long-run figure — it does not predict outcomes in any single session. Set a budget before playing.
Key Features
The eight chambers unlock progressively as the free-spins scatter trigger accumulates across sessions: Misty Vale (1st trigger, 5 spins, 2x multiplier) through to the eighth chamber, Realm of Riches (8th trigger onwards, 20 spins, 10x multiplier trail — the highest value chamber). Each chamber has a distinct mechanic.
Key chamber mechanics include: Dusky Moors — random wilds and 7 free spins; Forest Falls — tripled wild wins and 7 spins; Snow Valley — Frozen Wilds that remain and add to coverage over successive spins; Sunken Treasure — treasure chests opening additional scatter/wild features; Realm of Riches — Rolling Reels (cascade) with 5x–10x multiplier trail.
243 ways to win, Wild symbols substituting for all non-scatter symbols, and the Frozen Wild mechanic in higher chambers are consistent features. The Rolling Reels (cascade) mechanic in the Realm of Riches chamber with a 10x multiplier trail represents the game's true high-end potential.
Theme & Design
An Arthurian England of misty forests, ancient stone castles, the sword Excalibur, the Lady of the Lake, Merlin the Wizard, the Knights of the Round Table and the Holy Grail itself across the 243-ways grid. The cinematic orchestral soundtrack and high-quality artwork are outstanding for a 2014 release. The design remains compelling in 2026.
Verdict
Avalon II is essential playing for any serious Irish slots player. The 97.11% RTP combined with high volatility is extraordinary, the eight-chamber progressive free-spins system has influenced slot design industry-wide, and the Arthurian narrative execution is genuinely impressive. The €15 maximum bet is frustratingly low for a game of this quality.
Pros
- 97.11% RTP — exceptional for high-volatility
- Eight progressive free-spins chambers with distinct mechanics
- Realm of Riches chamber (10x multiplier trail) exceptional
- 243 ways provides good base-game coverage
- Arthurian narrative framework genuinely compelling
Cons
- Maximum bet of only €15 — extremely restrictive
- Realm of Riches requires 8+ scatter triggers to unlock
- Coin-based win display (not multipliers) — confusing
- Design dated by 2026 standards
Where to Play Avalon II in Ireland
Avalon II is available at Irish casinos carrying Microgaming content.
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Slots Gallery — casino alternativeIs Avalon II Available on Mobile?
Microgaming builds all titles in HTML5. Avalon II runs in any modern mobile browser on iOS or Android. All features function identically on mobile.
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Frequently Asked Questions
Avalon II has a published RTP of 97.11%. This is exceptional for a high-volatility slot — most high-volatility games sit at 95–96% RTP.
Chambers unlock progressively as the scatter trigger activates across sessions: from Misty Vale (1st trigger, 5 spins, 2x multiplier) through to Realm of Riches (8th trigger onwards, 20 spins, Rolling Reels with 10x multiplier trail).
Realm of Riches is the game's top-tier free-spins chamber, unlocked on the eighth and subsequent scatter triggers. It awards 20 free spins with Rolling Reels (cascade mechanic) and a 5x to 10x multiplier trail for consecutive cascades.
Yes. The game uses HTML5 and runs in any modern mobile browser on iOS or Android.
⚠ 18+ only. Gambling can be addictive. Play responsibly.
Contact the Gambling Awareness Trust: 1800 753 753 or gamblingcare.ie. RTP is a theoretical long-run average.