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Grid Detective (A Free Game for Kindle)

by Amazon Digital Services
4.3 out of 5 stars  See all reviews (842 customer reviews)

Price: $0.00 includes free wireless delivery via Amazon Whispernet

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Product Description

Do you have what it takes to crack the case? Grid Detective brings classic logic puzzles to Kindle.

Test your deduction skills as you try to solve 30 puzzles of varying difficulty. Each Case File starts with a brief story that describes your objective. Based on the information in the story and 6 clues, your job is to figure out which of the dozens of possible outcomes is the correct one. Using the process of elimination and deductive reasoning, you'll deduce the correct relationship between items. For example: if A=B and A<>C, then B<>C. If you can find the unique solution that matches the facts, you've solved the mystery!

Grid Detective makes it easy to solve with features that let you delete mistakes cleanly and quickly, highlight related cells on the grid and auto-populate relevant cells when you make a deduction.

A detailed tutorial and plenty of hints make it possible for everyone to enjoy testing their logical thinking against even the hardest Case File. Crack the case today with Grid Detective!

Product Details

  • Version: 1.2 (What's new in version 1.2)
  • Release Date: August 30, 2012
  • File Size: 789 kB
  • Language: English
  • Publisher: Amazon Digital Services
  • Sold by: Amazon Digital Services, Inc.
  • ASIN: B005OR9H5S
  • Simultaneous Device Usage: Unlimited
  • Publisher License: Read
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (842 customer reviews)
  • Amazon Best Sellers Rank: #4,120 Free in Kindle Store (See Top 100 Free in Kindle Store)
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Customer Reviews

Most Helpful Customer Reviews
268 of 279 people found the following review helpful
5.0 out of 5 stars Excellent free logic puzzle series from Amazon Services. September 22, 2011
A classic logic puzzle gives a list of clues, from which you much make a deduction. One of the best known is the "Who is the Engineer?" puzzle.

On a train, Smith, Robinson, and Jones are the fireman, brakeman, and the engineer, but NOT respectively. Also aboard the train are three businessmen who have the same names: a Mr. Smith, a Mr. Robinson, and a Mr. Jones.
1. Mr. Robinson Lives in Detroit.
2. The brakeman lives exactly halfway between Chicago and Detroit
3. Mr. Jones earns exactly $20,000 per year.
4. The brakeman's nearest neighbor, one of the passengers, earns exactly three times as much as the brakeman.
5. Smith beats the fireman in billiards.
6. The passenger whose name is the same as the brakeman's lives in Chicago.

Grid Detective would classify this one as Easy. In 30 excellent puzzles, a Gridwork is given with the relevant names, wages, colors, cities, or hobbies, and the cursor can mark X or O on the various squares to make deductions.

A trainer puzzle is given at the start. After that, there are 10 Easy, 10 Moderate, and 10 Hard puzzles.
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76 of 82 people found the following review helpful
5.0 out of 5 stars Warning.... Addictive! September 24, 2011
Verified Purchase
Remember the old DELL Logic books? The ones where you wore through the page erasing your marks?


An electronic version, using X and O, and auto populating the rest of the spaces with shading or the appropriate X each time you correctly figure out a clue. If you enjoyed the paper version, you'll LOVE this game.

Easy to navigate on the Kindle. X for "not an option" O for "correct answer", Space bar deletes what you have put into the square. PAGE forward to move to the next clue (which highlights the clue you are working on.)

Great Kindle distraction!

NOTE: update 10/2/11: This game will download to the new ($79) Kindle (many will not... see my review), and the 5 way can be used for the X and O (middle button with either single or double clicks. (12/26/11: but it is not ported to either the Kindle Touch or Kindle Fire).

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58 of 62 people found the following review helpful
5.0 out of 5 stars Just Love It!!! September 23, 2011
Verified Purchase
I always buy the logic problem puzzles and so when this free game came along I grabbed it. I love it, especially the fact that you csan erase and start over without destroying the paper grid :). If you like logic puzzles you will love this.
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36 of 42 people found the following review helpful
2.0 out of 5 stars Buggy October 23, 2011
This game started out great. I loved playing these kinds of puzzles when I was a kid. I was loving this, until I waited a couple days to come back to it after finishing about half of the puzzles. My place had been lost, all progress erased, and I had to start all over at the beginning. So I started at the end and worked my way backward instead. The next day yielded the same results. No history of me even having played. I deleted the game, and now my kindle loads faster than when the game was on it. Go figure.
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11 of 11 people found the following review helpful
5.0 out of 5 stars addictive October 6, 2011
This is the thinking woman's crack. Couldn't stop. Wanted more.. more.. more! Tried to go cold turkey but found the only way to stop was to finish all the puzzles. I did. Now I am sad.
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10 of 10 people found the following review helpful
5.0 out of 5 stars More, please! November 20, 2011
Verified Purchase
Alright, Amazon, now I'm hooked and there is only one title available. I bought three of the "Logic Puzzles by the Dozen" series only to discover (not having read the reviews) that they are not Kindle interactive. We need more like this one. Anyone listening?????
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8 of 8 people found the following review helpful
5.0 out of 5 stars Logic puzzles without all the writing! September 25, 2011
Verified Purchase
I've always loved this type of logic puzzles, but always hated filling out the grids. One misplaced "x" could derail your whole solution. And making revisions always became messy.

This version for the Kindle makes marking and correcting MUCH easier. When you find the correct answer for one of the items, you can just mark it, and the corresponding x's are automatically filled in for you! I have not made my way through all of the puzzles yet, but I look forward to it!
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5 of 5 people found the following review helpful
5.0 out of 5 stars Great Game November 16, 2011
Verified Purchase
As a fan of logic puzzles I was a bit skeptical that these would meet my expectations. However, they were terrific. I just wish there was more of them. I have already solved all the puzzles and can't wait for more to be available.
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Topic From this Discussion
Grid Detective -- free Kindle game
I hope we see more! My only complaint about Grid Detective is there weren't enough puzzles. Yes I know it was free :) This is me looking a gift horse in the mouth.
Oct 17, 2011 by Lisa |  See all 26 posts
Kindle Touch Update
Kindle touch does not have the screen rotation feature. All previous Kindles have.
Dec 16, 2011 by Youwon |  See all 16 posts
Kindle Touch Interface When will it be improved?
i hope, ´cause its awful and annoying O_O
Dec 29, 2011 by Israel Chavez |  See all 4 posts
Not available for the iPad app?
Jun 18, 2013 by Pilgrim |  See all 2 posts
No Grid Detective for Kindle Fire
I wrote a similar app with some friends for the Kindle Fire, and Amazon has finally approved it. 1.4 is now released, and it should fix display issues and puzzle answer issues from the previous versions. Looking forward to community feedback.

Aug 28, 2012 by King Butter |  See all 8 posts
free game Be the first to reply
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