Underground
Motorcycle-themed payline slot with two separate bonus routes
The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals, and it cannot be bought.
Why this score
Partial data (57%)Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.
Popularity blends real player search demand (~30 markets) with a catalogue-derived proxy; games without measurable search demand use the proxy alone. Not live play telemetry.
SlotRanker Score: 49 — Underground by Aiwin Games
https://slotranker.com/aiwin-games/underground#scoreSlot Summary
How It Plays
The base game uses five reels, three rows, and 15 paylines, so ordinary results depend on matching symbols across fixed line patterns.
Wild symbols substitute within line combinations, while Scatter and Bonus symbols have separate functions that move play away from the standard reel cycle.
Theme & Atmosphere
The Underground theme refers to motorcycle and road-gang culture rather than a mine or subterranean exploration setting, giving the title a more specific subject.
Action & Adventure cues come from the racing and crime associations reported for the game, while the darker presentation supports its outlaw identity.
Features & Win Potential
The Wild Symbol supports regular paylines through substitution, while the Scatter Symbol is associated with the route into Free Spins rather than ordinary matching alone.
Bonus symbols activate the separate Bonus Game, preserving a distinction between the game's two feature entries instead of combining them into one trigger.
Bonus & Free Spins
Free Spins are tied to Scatter symbols, while a qualifying combination of Bonus symbols opens the separate Bonus Game and its own feature sequence.
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Compare Underground with other games
 Underground Score 49This game |  The Cage Score 87 |  Mining Rush Score 77 |  Skeleton Key Score 76 |  Dynamite Strike Score 70 | |
|---|---|---|---|---|---|
| Identity | |||||
| Studio | Pragmatic Play This provider has been reviewed and approved by the SlotRanker team. What does this mean? | ||||
| Released | — | 6/20/2023 | 12/6/2024 | 12/17/2020 | 6/2/2022 |
| Math | |||||
| RTP | — | 96.05% | 95.49% | 96% | 95.94% |
| Volatility | — | High volatility | High volatility | Medium volatility | High volatility |
| Max win | — | 25,000× | 10,000× | 83,333× | 5,468× |
| Format | |||||
| Reels | 5 | 5 | 7 | 5 | 5 |
| Layout | 5x3 | 5x5 | 7x7 | 5x3 | 5x5 |
| Paylines | 15 | 5184 | 0 | 243 | 45 |
| Min bet | 0.05 | 0.2 | 0.2 | 0.1 | 0.5 |
| Max bet | 750 | 100 | 5 | 300 | 50 |
| Features | |||||
| Progressive | — | — | — | — | — |
| Wild symbol | ✓ | ✓ | — | ✓ | — |
| Free spins | ✓ | ✓ | ✓ | ✓ | ✓ |
| Scatter symbol | ✓ | ✓ | ✓ | ✓ | — |
| Multiplier | — | ✓ | — | ✓ | ✓ |
| Bonus game | ✓ | — | — | — | — |
| Respins | — | — | — | — | ✓ |
Every number is shown as a delta against Underground.
Questions & Answers
Underground FAQ
Underground is a video slot from Aiwin Games. External listings date its release to March 18, 2018.
The game uses 15 paylines across a five-reel, three-row layout, with Wild symbols helping complete ordinary combinations.
Underground includes Free Spins and a separate Bonus Game. Scatter and Bonus symbols provide the special-symbol routes into those features.
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