Nitropolis 3 launched on March 25, 2022 and is the most beloved installment in ELK Studios' post-apocalyptic franchise. A beach-meets-devastated-world setting with animal characters, a Bothway mechanic, and an ultra-flexible X-iter bonus buy (2x to 500x).
TL;DR
- ELK Studios slot, March 2022, sequel to Nitropolis 2 (2021). 6x4 expanding to 6x8 format.
- 4,096 Bothway ways (left-to-right AND right-to-left). RTP 95%, high volatility, MAX 50,000x, hit frequency 19.2%.
- Avalanche wins + grid expansion (up to +4 rows) + 4x4 Mega symbols/wilds + Nitro Reels (2x3 zones guaranteeing modifiers).
- 5 modifier symbols (Redrop / Both Ways / Nitro Match / Nitro Upgrade / Nitro Wild). X-iter bonus buy from 2x to 500x.
The Nitropolis franchise
| Slot | Year | Max Win | Standout feature |
|---|---|---|---|
| Nitropolis | 2020 | 12,500x | Original format |
| Nitropolis 2 | 2021 | 25,000x | Mega symbols introduced |
| Nitropolis 3 | 2022 | 50,000x | Bothway + 5 modifiers |
| Nitropolis 4 | 2024 | 100,000x | Sequel with expanded mechanics |
Nitropolis 3 remains a fan favorite for its pacing and the very broad 2x-500x X-iter flexibility.
Bothway — the signature mechanic
This is Nitropolis 3's defining mechanic: winning combinations are recognized both left to right AND right to left simultaneously. This doubles the number of potential hits.
| Direction | Ways |
|---|---|
| Left → right | 4,096 |
| Right → left | 4,096 additional |
| Effective total | 8,192 hit chances per spin |
On the expanded 6x8 grid during avalanches, the potential becomes massive.
Nitro Reels and Big Nitro Reels
A hallmark of the franchise since the start. These are special 2x3 zones that appear randomly on the grid:
- Nitro Reels = a mini 2x3 zone where every symbol is guaranteed to be a modifier (Redrop, Both Ways, Nitro Match, etc.)
- Big Nitro Reels = an expanded version with cumulative multipliers
When a Nitro Reel appears, it's almost always followed by a substantial modifier hit. That's the visual cue to watch for.
The 5 modifier symbols explained
| Modifier | Effect |
|---|---|
| Redrop | Re-triggers a symbol drop on the affected zone |
| Both Ways | Activates Win Both Ways for the spin |
| Nitro Match | Matches modifiers together for a combo |
| Nitro Upgrade | Upgrades low-tier symbols to high-tier |
| Nitro Wild | Creates expanded wilds across the grid |
Combined, these modifiers can trigger massive chains during the bonus mode.
X-iter bonus buy, 2x to 500x
An ELK signature: the X-iter menu offers flexibility from 2x to 500x the stake. Here are the typical tiers:
- 2x: Bonus Hunt (accelerated bonus search)
- 5x: Guaranteed Multiplier Wilds on 1 spin
- 20x: Guaranteed Mega Symbols
- 50x: Direct Free Spins
- 100x: Free Spins + guaranteed Nitro Reels
- 500x: Super Bonus mode (max grid + permanent Bothway)
⚠️ Bonus buy is banned in the UK.
Free Spins + Super Bonus
Free Spins are triggered via 3+ scatters (or X-iter). Features:
- Sticky Nitro Reels persist throughout the bonus
- Cumulative multipliers on every cascade
- Grid at maximum size from the start
- Super Bonus mode = permanent max grid + Win Both Ways permanently active + progressive multipliers
The main path to the 50,000x max win runs through the Super Bonus via a 500x X-iter buy.
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FAQ
What is Nitropolis 3's RTP?
Official RTP: 95% (modest against the 96% market standard, but common for ELK). Adjustable by operator — check via the in-game "i" button.
Nitropolis 3 or Nitropolis 4?
Nitropolis 3 (2022) remains a fan favorite for its pacing and the highly flexible 2x-500x X-iter. Nitropolis 4 (2024) pushes further with a higher max win (100,000x) and a more elaborate visual world. Both share the Bothway mechanic.
How does Bothway work?
Winning combinations are recognized both left to right AND right to left. This doubles the number of potential hits — 4,096 ways on each side equals 8,192 hit chances per spin.
Is Nitropolis 3 widely available?
Yes, at most casinos that carry ELK Studios. ⚠️ Bonus buy is banned in the UK.
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