Nitropolis 4
- RTP
- 94.00%
- Volatility
- High
- Max win
- 50,000×
Game facts
- Provider
- ELK Studios
- Layout
- 6 reels, 4 rows expanding, 4,096 ways up to millions
- Bet range
- €0.20 – €50.00
- Hit frequency
- 1 in 5.5
- Features
- Expanding reels and big symbols, Nitro Reels and Nitro Multipliers that multiply each other, Nitro Booster with 8 random features including Max Rows, Redrop and Both Ways, Bonus with sticky Nitro Reels at 3 or more bonus symbols, Super Bonus played with Max Rows and Both Ways, X-iter modes from 2x to 500x the bet (where allowed)
Not yet verified: Bonus frequency
RTP settings
ELK's data sheet gives Nitropolis 4 a 94.0% RTP, the studio's default for newer titles. Operators can choose lower settings, and the info panel shows the one your casino runs.
One published setting: 94.00%, a house edge of 6.00%.
RTP rank
Ranks 131 of 139 by top published RTP. 7 slots share 94.00%.
94.00% · this slot
How Nitropolis 4 plays
Nitropolis 4 moves ELK’s gang of animals to an offshore drilling rig, on six reels and four rows that expand. Big symbols, Nitro Reels and Nitro Multipliers do the heavy lifting: a Nitro Multiplier multiplies any win in view, and several of them multiply each other.
Two screens above the reels randomly trigger the Nitro Booster, one of eight features on the main reels: Max Rows, Garbage Collect, Nitro Reel, Nitro Wild, Nitro Upgrade, Nitro Match, Redrop or Both Ways. Three or more bonus symbols start the free spins with sticky Nitro Reels, and a mix of bonus and super bonus symbols starts the Super Bonus, played with Max Rows and Both Ways switched on. X-iter paid modes run from 2x the bet to a 500x Super Bonus where the market allows them.
Volatility in practice
ELK rates it 8 of 10. The 18.1% hit frequency means most spins miss, and the return is concentrated in the Super Bonus where multiplied Nitro Multipliers meet Both Ways pays. The 50,000x ceiling is the same as Nitropolis 3.
RTP settings
ELK’s data sheet gives 94.0%. At €1 spins over 1,000 spins, that is an expected cost of about €60. Operators can be supplied with lower settings, so the info panel is the figure that applies. A paid X-iter mode raises the cost per round without improving the RTP. At 94.0% the house edge is noticeably bigger than on a 96% game.
Common questions
What is the RTP of Nitropolis 4?
94.0% according to ELK's data sheet. Check the info panel at your casino in case it runs a lower setting.
What is the max win?
50,000x the bet, according to ELK's data sheet.
What is the Nitro Booster?
Two screens above the reels that randomly fire one of eight features on the main reels: Max Rows, Garbage Collect, Nitro Reel, Nitro Wild, Nitro Upgrade, Nitro Match, Redrop or Both Ways.
How do the bonuses work?
Three or more bonus symbols start the free spins, where all Nitro Reels are sticky. Bonus and super bonus symbols together start the Super Bonus, played with Max Rows and Both Ways active.
Same family
| Slots | RTP | Max win | Released |
|---|---|---|---|
| Nitropolis 3 | 95.00% | 50,000× | — |
| Pirots 4 | 94.00% | 10,000× | |
| Cygnus | 96.10% | 5,000× | — |