Mystery Spin Deluxe Megaways Slot Free at Monster
Blueprint Gaming’s Mystery Spin Deluxe Megaways does something clever with the Megaways formula—it locks reel heights together. Every spin, the first reel decides how tall all six reels become, creating fixed configurations from 729 to 117,649 ways. This synchronized system sets up the game’s main trick: reels can glow purple and mirror each other mid-spin, filling the screen with matching symbols.
At Monster you’ll find this slot alongside 1,500+ other titles from Blueprint and nineteen other providers. The casino’s mission-based rewards programme adds cashback and free bets on top of base gameplay, which matters when you’re grinding high-volatility slots like this one.
Technical Specifications
| Parameter | Value |
|---|---|
| Developer | Blueprint Gaming |
| Release Date | June 6, 2019 |
| RTP | 95.00% / 96.00% |
| Volatility | High |
| Max Win | 10,000x (£100,000) |
| Bet Range | £0.10 – £10.00 |
| Ways to Win | 729 – 117,649 |
| Reels / Rows | 6 reels / 2-7 variable |
| Mobile | iOS, Android, HTML5 |
How the Synchronized Megaways System Works
Forget random reel heights. Here, reel one spins first and dictates the symbol count for all other reels. Land three symbols on reel one? Every reel gets exactly three symbols—giving you 729 ways. Seven symbols? All reels expand to seven, unlocking the full 117,649 ways.
This creates predictable volatility spikes. Small reel heights mean frequent small wins. Maximum heights mean rare but explosive potential.
The In Sync feature activates randomly before the spin. Purple-glowing reels—minimum two, sometimes all six—display identical symbols. When reels two through five sync, you’re essentially playing a much simpler slot with guaranteed matches.
Mystery Spins take this further. When triggered during an In Sync round, only game logo symbols land on synchronized reels. After the spin settles, every logo transforms into the same regular symbol. Six synced reels filled with logos? You’re about to see a full screen of matching high-pays.
🎯 Expert Tip: Maximum ways don’t always mean maximum value. A five-reel sync on 729 ways with premium symbols often pays better than scattered matches across 117,649 ways.
Symbol Values and Paytable
| Symbol | 6-of-a-Kind Payout |
|---|---|
| Red Seven | 10.0x |
| Watermelon | 1.0x |
| Orange | 0.8x |
| Grape | 0.6x |
| Lemon | 0.6x |
| Cherry | 0.5x |
| Ace | 0.5x |
| K / Q / J / 10 | 0.4x |
| Wild | Substitutes all except Mystery |
| Mystery (Logo) | Transforms to matching symbol |
Payouts scale with bet size. That 10x Red Seven at maximum £10 stake pays £100. The watermelon at 1x becomes your mid-tier target during synced spins.
Mystery symbols can land on any spin, synced or not. When multiple logos appear, they all reveal the same randomly chosen symbol—sometimes a ten, sometimes a Red Seven. This variance swing defines the slot’s high-volatility personality.
Playing at Monster Casino
Monster runs this slot under dual MGA and UKGC licensing with standard responsible gaming controls built in. The casino’s £1,000 welcome package splits across deposits, and their rewards system converts completed missions into slot bonuses and sports free bets.
Payment processing moves through PayPal, Skrill, Neteller, card rails, and mobile billing. E-wallet withdrawals clear in 24 hours according to casino documentation, though card and bank routes stretch to 3-10 business days depending on method.
The platform’s mobile browser experience handles this slot cleanly in landscape mode. No download needed—HTML5 loads directly in Safari or Chrome.
💡 Practical Note: Test the sync frequency in demo mode before committing real stakes. Feature trigger rates vary session to session due to high volatility.

























