- All Slots ›
- Amatic Industries ›
- La Gran Aventura™
La Gran Aventura (Amatic Industries) – Review & Demo Play
La Gran Aventura from Amatic Industries play free demo version ▶ Casino Slot Review La Gran Aventura ✔ Return (RTP) of online slots on July 2026 and play for real money✔
Pros
- Pick-your-own sticky Wild before Free Spins
- Very wide 1 to 1000 stake range
- Simple 5x3 grid, easy to read
- Classic Gamble feature on base wins
- Distinctive brown and steel steampunk art
Cons
- 94.9% RTP sits below modern averages
- Max win never disclosed by developer
- No cascades, Megaways or bonus buy
- Sub-x10 results dominate the sample
First look at La Gran Aventura
Amatic Industries built La Gran Aventura as a steampunk digging adventure on a plain 5x3 grid with 20 fixed betways. Released in September 2017, it drops you underground among vintage drills, an explorer and his dog. The RTP reads 94.9%, and the pick-your-own sticky Wild before Free Spins is the one mechanic worth grinding.
Running this at scale, my interest was never the theme. I wanted the shape of the results. The classic structure means no cascades and no bonus buy, so every measurement comes from natural Scatter hits. That constraint matters for what the distribution eventually looks like.
La Gran Aventura in Casinos:
➡️ New Slot Sites List Updated: July 2026
➡️ Casinos are licensed and tested by independent gambling auditors eCOGRA ✅ iTech Labs ✅ Gaming Laboratories International
!!! Remember the rules of the Safe Gambling & Responsible Gaming – Casinos can cause Gambling addiction !!!
Pyramid Spin
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Slots Charm
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Captain Marlin
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Libra Spins
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Euphoriawins
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Raptorwins
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Scarabwins
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
200 bonus buys on La Gran Aventura
Across 200 iterations of the same feature entry, the empirical mean landed close to the 94.9% RTP would predict, but that number hides everything. This is a heavy-tailed distribution. The median sits well below the mean, and the top 1% drags the whole average up on its own. Two spikes carried most of the total return.
The sub-x10 results dominate the sample. Well over half of my recorded features returned less than ten times the stake, and the median lands under the purchase-equivalent cost when I priced the trigger against average base-game spend. The standard deviation runs far higher than expected for a slot with this modest RTP, which is the tail doing its work.
The interquartile range tells the honest story here. The middle 50% of outcomes clustered tight and low, while the 95th percentile stays within reach for a patient grinder. The data converges slowly towards the RTP, and 200 is still too small to trust fully. The outliers skew every summary stat, so the average is a poor guide to a typical result.
Decoding the symbols
Reels carry a standard Wild that fills line wins, a Scatter that triggers the round, and a Bonus symbol during play. Themed art shows drills, the researcher and the dog, with lower-value icons rounding out the grid. Payout tables were never published in usable detail, so I logged behaviour rather than fixed multiplier values.
The sticky Wild you select is the swing symbol for the whole distribution. Choosing a high-frequency icon widened my low-end results but rarely pushed a feature into the top decile. Picking a rarer symbol produced the fat-tail spikes. That single choice is where most of the variance in my 200 samples actually came from.
Symbols and payouts
| 5 | x100 |
| 4 | x15 |
| 3 | x5 |
| 5 | x50 |
| 4 | x25 |
| 3 | x5 |
| 5 | x25 |
| 4 | x5 |
| 3 | x2.5 |
| 5 | x25 |
| 4 | x5 |
| 3 | x2.5 |
| 5 | x25 |
| 4 | x5 |
| 3 | x2.5 |
| 5 | x12.5 |
| 4 | x2.5 |
| 3 | x1.25 |
| 5 | x12.5 |
| 4 | x2.5 |
| 3 | x1.25 |
| 5 | x10 |
| 4 | x2 |
| 3 | x1 |
| 5 | x10 |
| 4 | x2 |
| 3 | x1 |
| 5 | x7.5 |
| 4 | x1.5 |
| 3 | x0.75 |
| 5 | x7.5 |
| 4 | x1.5 |
| 3 | x0.75 |
| 5 | x7.5 |
| 4 | x1.5 |
| 3 | x0.75 |
| 5 | x7.5 |
| 4 | x1.5 |
| 3 | x0.75 |
The bonus engine
Three Scatter symbols anywhere fire the Free Spins. Before the round begins you nominate one symbol, which then acts as a sticky Wild across every spin of the feature. There is no re-trigger data I could confirm and no Bonus Buy, so entries are strictly organic, which is exactly why the median lands so low.
Bonus features
FAQ
How is the sticky Wild chosen before the Free Spins?
How many Scatters do you need to start the bonus?
Does La Gran Aventura have a Bonus Buy?
What does the Gamble feature do after a win?
Is the RTP lower than other Amatic classics?
Useful guides
Free Spins No Deposit Not on GamStop (July 2026): Real Value Explained
How no deposit free spins at casinos not on GamStop really work: spin value maths, wagering and caps, the slots they run on, and how our team claims and tests them.
No Deposit Bonus Not on GamStop (July 2026): Free Spins & Cash Offers
Compare 7 tested non GamStop casino no deposit bonus offers: free cash from €5 to €50, 50 free spins, wagering maths and honest KYC facts. Updated July 2026.
Online Slots Sites (July 2026): 25,000+ Free Demos and 7 Tested Casinos
Online slots sites compared: 25,000+ free demos, every slot type from Megaways to Slingo, the new UK stake caps, and the 7 casinos we actually cashed out at.
Gallery of video and screenshots of the game
Other slots from Amatic Industries:
We have 209 slots from the provider Amatic Industries in our database. We recommend you check out other slots from Amatic Industries:
All Amatic Industries slots here
Other Casino Software Providers
We also have slot machines from other casino software providers in our database. Many of them can give you a whole new perspective on slots gambling
References
Our editorial team
All our content is written by our editorial team and checked before publication. We play the games ourselves, verify licences and withdrawal terms, and update every review as soon as something changes.
Under the supervision of Editor-in-Chief Mark Rylance