Sisters of Oz WowPot Slot Review — RTP, Features & Where to Play

Sisters of Oz WowPot

Triple Edge Studios · 2020

A 5×4 Wizard of Oz jackpot slot from Triple Edge Studios on the WowPot four-tier progressive network. Four stacked sister characters form 3×4 Jumbo Blocks across reels 2–4 for large cluster wins. A random Golden Oz Coin trigger spins the jackpot wheel for Mini, Minor, Major or WowPot prizes — the WowPot tier seeds at €2M. Free spins guarantee a Jumbo Block on every spin with a 2× multiplier applied to all wins.

About the game

Sisters of Oz WowPot is Triple Edge Studios' September 2020 Wizard of Oz slot, distributed through Games Global on the WowPot four-tier progressive jackpot network. The 5×4 grid with 20 fixed paylines features four stacked sister characters — each in a different colour — alongside golden orbs and Oz-themed imagery.

The defining visual mechanic is the Jumbo Block system. Each of the four sisters stacks 4-high and can combine across reels 2, 3 and 4 to form massive 3×4 symbol blocks, generating large cluster wins when aligned. A Golden Book symbol serves as both wild and scatter, appearing on reels 1 and 5 only. Any spin during the base game can randomly produce a Golden Oz Coin, which immediately triggers the jackpot wheel — awarding one of four progressive jackpot tiers (Mini, Minor, Major, WowPot) regardless of the spin's payline result. The WowPot tier seeds at €2M and grows until won across all WowPot-network titles.

Free spins trigger on 3, 4, or 5 scatters (awarding 5, 7, or 10 spins respectively). During the free spin round, a guaranteed 3×4 Jumbo Block lands on reels 2, 3 and 4 on every spin — ensuring consistent large symbol coverage throughout the feature. A 2× multiplier applies to all wins, and landing 2 additional scatters mid-feature adds 3 more spins. The jackpot wheel trigger remains active throughout free spins.

Key features

5×4 grid, 20 fixed paylines
WowPot four-tier progressive jackpot (Mini, Minor, Major, WowPot — seeds at €2M)
Random jackpot wheel trigger: any spin can award any jackpot tier
Jumbo Block symbols: 3×4 stacked character blocks on reels 2–4
Free spins: 5 / 7 / 10 spins for 3 / 4 / 5 Scatter symbols; +3 spins for 2 Scatters during feature
Guaranteed Jumbo Block on every free spin
2× win multiplier applied to all wins during free spins
Book Wild/Scatter: acts as both wild (substituting all symbols) and scatter (reels 1 and 5 only)

Frequently asked questions

How does the WowPot jackpot trigger?

Randomly on any spin. When a Golden Oz Coin appears, the jackpot wheel activates and the player spins for one of four prize tiers — Mini, Minor, Major or WowPot. No special alignment is required; any spin can trigger it.

What is a Jumbo Block?

The four sister characters each stack 4-high on any reel. When three consecutive reels (2, 3, and 4) all show the same sister stacked full-height, they merge into a single 3×4 Jumbo Block — a large symbol covering 12 grid positions and contributing to wins across all 20 paylines simultaneously.

What happens to the Jumbo Block in free spins?

A 3×4 Jumbo Block is guaranteed on reels 2, 3 and 4 on every free spin. Combined with the 2× win multiplier active throughout, this makes the free spin round significantly more powerful than the base game.

What is the RTP?

The published RTP is 92.00%. Around 5.30% of that total is contributed to the WowPot progressive jackpot pool, leaving 86.70% returned through base-game wins. Players recover the jackpot contribution collectively through progressive jackpot hits.

Is this slot legal to play in Ontario?

Yes — provided you play at an iGaming Ontario / AGCO-licensed operator. The casinos listed above are Ontario-licensed. Playing on unregulated international sites from within Ontario is not legal and offers no consumer protections.

Sisters of Oz WowPot

Quick facts

About the game

Key features

Screenshots

Where to play

Frequently asked questions

About the Expert: Andre Weston

Andre Weston | iGaming Industry Consultant