Comparison

Blackstone Mysteries vs Captain Nemo

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Blackstone Mysteries

Step into the shoes of a detective and solve intriguing mysteries in a city full of suspense. Search for hidden objects across hundreds of quests and diverse scenes. Enjoy various game modes and collect numerous items to unravel the town's secrets.

Highlights
  • Investigate puzzling mysteries
  • Search for hidden objects
  • Explore gorgeous scenes
  • Play seven exciting game modes
  • Complete a myriad of quests
  • Collect hundreds of items
  • Utilize hints
Features
Read full description

Become an ace detective and investigate puzzling mysteries in an exciting new hidden object game! Solve cases in a city fraught with intrigue and suspense! Search for hidden objects and uncover the secrets of the town of Westford! Can you unravel the city's most baffling mysteries? Find out by playing the best FREE hidden object game on the iPhone, iPad, or iPod Touch! Hundreds of quests and an ever-growing collection of scenes await you! **** FEATURES ****
 ● Explore gorgeous scenes made for the Retina Display! ● No Internet connection required to play! Enjoy the game at any time! ● Play seven exciting game modes like Mirror Mode and Night Mode! 
● Complete a myriad of quests as you assist the residents of Westford 
● Regular updates bring new scenes, quests, and characters for FREE! ● Collect hundreds of different items and complete a variety of collections!
 ● Difficulty increases as you play each scene, revealing new objects!
 ● Utilize plenty of hints to help you complete scenes!
 ● Interact and trade information with a cast of colorful characters!
 ● Try and get the highest score for every scene! ____________________________ **** ADDITIONAL NOTES ****
 ● Runs on iPad, iPhone, and iPod touch devices
 ● Send us your feedback so we can improve your playing experience! Email support@rolltower.com to contact us ● Make sure to leave us a review! We love the support of our fans!

About

Captain Nemo

Embark on a hidden object adventure inspired by "20,000 Leagues under the Sea." Explore vibrant underwater scenes and character interiors as you uncover the mystery of Captain Nemo and his Nautilus. Replay scenes to discover new quests and rewards.

Highlights
  • Hidden object gameplay
  • Based on "20,000 Leagues under the Sea"
  • Explore underwater views and islands
  • Complex and diverse locations
  • 360-degree panoramas and 3D views
  • Collect rewards and replay quests
Features
Read full description

Solve the mystery of Nautilus in the hidden object adventure game! A game based on "20,000 Leagues under the Sea", a famous novel by Jules Vernes. The game is TRULY FREE: you can download the full version for free and unlock every scene with no in-game purchases. It tells the story of the incredible journey of mysterious Captain Nemo and three friends, who have inadvertently found themselves on board his underwater vessel, the Nautilus. Frigate Abraham Lincoln sets out to search for an undiscovered sea monster. The expedition, in which Pierre Aronnax, his loyal servant Conseil, and Canadian harpooner Ned Land take part, finds the monster and starts a chase. Unexpectedly, the monster turns out to be a unique underwater vessel. Professor Aronnax and his two companions are taken prisoner by the captain of the Nautilus. Despite the fascinating beauty of the undersea realm, the three friends yearn to break free and return to normal life on dry land... This game has the following special features: - Vibrant interiors of a character vessel, magical underwater views, and tropical islands. - Complex and diverse locations: experience regular landscapes alongside 360-degree panoramas and 3D views! - Build your collection of rewards! Go through scenes again to try new quests and get new rewards! Jules Verne was an author who always surprised the world. His stories are so realistic that, even today, readers are convinced that the journeys he described were real. We'll be happy to stay in touch with you at www.facebook.com/CrispApp : leave comments, ask questions and get news about coming games!

Screenshots

Blackstone Mysteries4 screens
Captain Nemo4 screens

Verdict

The call

The clearest difference is update cadence: Blackstone Mysteries at fortnightly against Captain Nemo's every 22 months. Blackstone Mysteries also leads on iOS requirement (11.0 vs 13.4). Captain Nemo's advantage is review sentiment (87% vs 68%). On price, rating, ratings volume and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Blackstone Mysteries sells 12 one-off in-app purchases and Captain Nemo sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Captain Nemo holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 1.9K and 3.7K respectively. Written reviews point the same way: 68% of Blackstone Mysteries's written reviews are positive against 87% of Captain Nemo's.

UpkeepUpdate frequency

Blackstone Mysteries ships an update fortnightly, Captain Nemo every 22 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
Blackstone Mysteries versus Captain Nemo: the parameters behind the verdict, then further details
ParameterBlackstone MysteriesCaptain Nemo
PriceFreeFree
Rating4.4 (1.9K ratings)4.6 (3.7K ratings) — better
Positive reviews68.3% of reviews86.9% of reviews — better
Number of ratings1.9K3.7K — better
Update frequencyFortnightly — betterEvery 22 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better13.4
Further details — not scored
Size92 MB169 MB
Age rating4+12+
DeveloperRolltower Studios IncCrisp App Studio

Customer experience

Blackstone Mysteries

All ratings1,863 ratings
Positive83.5%
Neutral12.0%
Negative4.5%
Written reviews259 reviews
Positive68.3%
Neutral21.6%
Negative10.0%

Captain Nemo

All ratings3,653 ratings
Positive90.5%
Neutral6.9%
Negative2.6%
Written reviews350 reviews
Positive86.9%
Neutral8.0%
Negative5.1%

User reviews

Blackstone Mysteries

From 1.9K App Store ratings

What we love

  • 💰 Money pit at first, but levels off quickly
  • 🕵️‍♀️ Great search game, none better
  • 👍 Enjoyable
  • 🎨 Varied activities and mini-games
  • 🏢 Office to decorate

Room to improve

  • 🔋 Energy runs out too quickly
  • 🕰️ Slow progress and high costs to unlock new areas
  • 🔍 Difficult to find required items
  • 🐛 Frequent crashes and glitches
  • 📺 Too many ads

Captain Nemo

From 3.7K App Store ratings

What we love

  • 🚀 Fun and challenging
  • 👍 Relaxing gameplay
  • 🎨 Great graphics
  • 💡 Interesting story
  • 👍 No time limits

Room to improve

  • 🔍 Some objects hard to see
  • 💰 Too many ads
  • 🔍 Terminology can be obscure

Bugs and requests

Blackstone Mysteries

Reported bugs

4 issues
  • Frequent crashes and freezes
  • Rewards and purchases not working as expected
  • Orientation issues after watching ads
  • Friend requests not functioning properly

Requested features

6 requests
  • Faster energy regeneration
  • Lower costs to unlock new areas
  • Improved item drop rates
  • Zoom function for better visibility
  • Streamlined friend request system
Show 1 more
  • Option to play without time pressure

Captain Nemo

Reported bugs

2 issues
  • Game freezes or crashes on some devices
  • Compatibility issues on older devices

Requested features

3 requests
  • Option to disable ads
  • Ability to adjust brightness/contrast
  • More variety in scenes and puzzles

In-app purchases

12 purchases

Blackstone Mysteries

One-time12
  • Small Set of Items$0.99
  • Energy Item Pack$2.99
  • Medium Set of Items$2.99
Show 9 more
  • 15000 Coins$4.99
  • 44 Gems$4.99
  • 31750 Coins$9.99
  • 93 Gems$9.99
  • 30000 Coins and 90 Gems$9.99
  • Large Set of Items$9.99
  • 190 Gems$19.99
  • 395 Gems$39.99
  • 999 Gems$99.99
6 purchases

Captain Nemo

One-time6
  • Instant Hint$0.99
  • Time Machine$0.99
  • Preview Hints Pack$0.99
Show 3 more
  • No Ads$1.99
  • Master Pack Special$2.99
  • Hidden Objects : All-included$3.99

Questions

Is Blackstone Mysteries free?
Blackstone Mysteries is free to download, with in-app purchases available.
Is Captain Nemo free?
Captain Nemo is free to download, with in-app purchases available.
Which has better reviews, Blackstone Mysteries or Captain Nemo?
Captain Nemo is rated higher. Blackstone Mysteries averages 4.4 out of 5 from 1.9K ratings, while Captain Nemo averages 4.6 from 3.7K ratings.
Do Blackstone Mysteries or Captain Nemo have ads?
Both Blackstone Mysteries and Captain Nemo show ads.
Which is updated more often, Blackstone Mysteries or Captain Nemo?
Blackstone Mysteries ships an update fortnightly, and Captain Nemo every 22 months. Most recently, Blackstone Mysteries was updated on October 21, 2026 and Captain Nemo on October 24, 2026.

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