Monster Mine is sone770's underground adventure slot where you drill through monster-infested mine shafts, detonate explosive combos, and collect massive payouts. Four monster ranks, a Blast Bonus round, and a 97.1% RTP make every session worth the dig.
Monster Mine is one of the most action-packed games in the sone770 lineup. The concept puts you in the role of a miner drilling through underground shafts populated by creatures of four different ranks — Common Slimes, Rare Rock Beasts, Epic Shadow Crawlers, and the fearsome Boss Titan that guards the deepest level of the mine. Every spin of the reels is a new drill blast, and every monster you defeat contributes to the Shaft Depth Meter that drives the game's core bonus mechanic.
The game runs on a six-reel, thirty-payline layout — one reel wider than most slots on sone770, which means more symbol combinations per spin and a higher frequency of multi-line wins. High volatility means the base game can run quiet for stretches, but when the Blast Bonus triggers or a Boss Titan combination lands, the payouts are substantial. The 97.1% RTP is among the highest in the sone770 catalog.
Players from Manila, Cebu, and Davao have made Monster Mine one of the most-played titles on sone770. The underground theme, the monster-ranking system, and the explosive visual feedback when a Blast Bonus triggers all contribute to sessions that feel genuinely engaging rather than passive. It's the kind of game you open for a quick session and end up playing for an hour.
Every symbol in Monster Mine belongs to one of four monster ranks. Rank determines payout value, Shaft Depth Meter contribution, and which bonus features the symbol can trigger.
The Shaft Depth Meter is the engine that powers Monster Mine on sone770. Displayed prominently below the six reels, it tracks your drilling progress through the mine shaft. Every winning combination adds depth points — Common monsters contribute a small amount, while Epic and Boss monsters push the meter significantly further with each win.
When the Shaft Depth Meter reaches 100%, the Blast Bonus round activates. The mine shaft explodes open to reveal a pick-and-reveal grid where you detonate charges to uncover prizes: cash multipliers, free spins, monster upgrades, or the jackpot entry. The meter resets after each Blast Bonus and begins filling again from zero.
What makes the Shaft Depth Meter particularly compelling for sone770 players in Quezon City and Makati is that it creates a secondary win condition running parallel to the base game paylines. Even a spin with no payline wins can still advance the meter if any symbol lands in a contributing position — keeping every spin meaningful.
A persistent progress bar that fills with every win — reach 100% to trigger the explosive Blast Bonus round.
Six reels and thirty fixed paylines — one reel wider than standard, giving more winning combinations per spin.
Detonate charges on a mine grid to reveal cash multipliers, free spins, monster upgrades, or jackpot entry.
Volt Crawler wins trigger a chain reaction on adjacent reels — one win can cascade into two or three more.
Six Boss Titan symbols across active paylines triggers the mine jackpot — the highest single payout in the game.
The Drill Bit Wild substitutes for all standard symbols and adds a 2x multiplier to any combo it completes.
Fully browser-based on sone770 — no download needed. Runs smoothly on Android and iOS devices.
Set spin count and loss limits for hands-free play — ideal for building the Shaft Depth Meter steadily.
| Symbol | Rank | 3-of-a-Kind | 4-of-a-Kind | 5-of-a-Kind | 6-of-a-Kind |
|---|---|---|---|---|---|
| Boss Titan | Boss | 40x | 120x | 250x | Jackpot |
| Iron Colossus | Boss | 25x | 80x | 180x | 300x |
| Frost Golem | Epic | 15x | 45x | 80x | 110x |
| Inferno Drake | Epic | 10x | 28x | 50x | 75x |
| Shadow Crawler | Rare | 5x | 12x | 22x | 30x |
| Volt Crawler | Rare | 3x | 8x | 14x | 18x |
| Rock Beast | Common | 1x | 2.5x | 4x | 5x |
| Common Slime | Common | 0.5x | 1.5x | 2.5x | 3x |
| Drill Bit Wild | Wild | Substitutes all standard symbols; adds 2x multiplier to completed combos | |||
Wild tip: The Drill Bit Wild's 2x multiplier stacks with the free spins multiplier during the Blast Bonus round. A Wild completing a Frost Golem six-of-a-kind during a 3x free spins round pays 660x your bet — one of the highest achievable single-spin outcomes in Monster Mine on sone770.
When the Shaft Depth Meter hits 100%, the Blast Bonus opens a 4×4 grid of detonation charges. Pick charges one by one until you hit a "Cave-In" marker. Each charge hides one of these prize types:
The Monster Upgrade prize temporarily elevates all Common symbols to Rare value and all Rare symbols to Epic value for the next 12 spins after the Blast Bonus ends. Combined with a Wild Surge — which increases Drill Bit Wild frequency on the reels — a Monster Upgrade can turn a quiet stretch into a high-value run. Sone770 players who trigger both in the same Blast Bonus session consistently report their biggest single-session wins from Monster Mine.
From registration to your first Blast Bonus, here's the complete process for getting started with Monster Mine on sone770:
Register for free — you'll need a valid Philippine mobile number and to confirm you're 21 years or older. The sign-up form takes under two minutes.
Fund your account using GCash, PayMaya, BPI, BDO, or Metrobank. Minimum deposit is ₱100 and GCash deposits reflect instantly in your sone770 balance.
Navigate to Monster Mine from the sone770 header menu or the Slots section. The game loads directly in your browser — no app download required on Android or iOS.
Choose your bet per spin — from ₱1 up to the maximum stake. Hit Spin or activate Auto-Spin. Watch the Shaft Depth Meter fill as winning combinations land.
Fill the Shaft Depth Meter to 100% to enter the Blast Bonus mine grid. Pick your detonation charges, reveal your prizes, and watch your balance grow. Winnings credit instantly.
Request a withdrawal anytime. GCash and PayMaya payouts process within 15 minutes. Your winnings go straight to your e-wallet — fast and hassle-free.
Sone770 supports the payment channels Filipino players use every day. Fast deposits, faster withdrawals — no friction between you and your winnings.
GCash and PayMaya deposits are instant. BPI, BDO, and Metrobank transfers process within 5–30 minutes. All withdrawals from sone770 are processed to the same payment method used for your deposit. Minimum withdrawal is ₱200.
Monster Mine is high volatility — sessions can swing hard in either direction. These habits won't change the RNG, but they'll help you get more value from every session on sone770.
Join thousands of Filipino players already drilling through Monster Mine on sone770. Register in under two minutes, deposit via GCash, and start filling the Shaft Depth Meter today.