Heading 01
Session shape
How long a level really takes on a bus, in a queue, on the couch. If a title only works in half-hour blocks, the entry says so instead of calling it casual.
Independent puzzle desk · Australia
Puzzle games, read like a briefing.
RetroIntel plays free Android puzzle games the slow way — many sessions, ordinary phones, no press builds — and then writes down what actually happens after level fifty. Six titles are in the current index, each with the public Google Play rating printed next to our notes.
Current indexPlay rating
Flow Free4.6
Nonogram.com4.5
Sudoku.com4.6
Jigsaw Puzzles4.5
Wordscapes4.6
Cut the Rope4.2
Section 01 · Method
Four things we watch, every time
A puzzle game is easy to praise in the first ten minutes. We keep a title on a real phone for at least two weeks and take notes against the same four headings, so entries can be compared rather than admired one at a time.
Two weeks minimum
Ordinary handsets
No press builds
Heading 02
Difficulty curve
Where the ramp actually turns — usually somewhere past level fifty — and whether the turn feels designed or simply engineered to slow you down.
Heading 03
Interruption load
How often the game breaks its own rhythm with full-screen ad breaks, pop-ups and upgrade prompts. This is the single note readers ask us about most.
Heading 04
Craft
Art, sound, typography and the small animations between moves. Not decoration — it is what makes a board worth reopening on a grey Tuesday.
About the number. The figure printed beside each entry is the public Google Play rating for that exact title, read on the day the entry was written. It is not a RetroIntel score — our verdict lives in the notes, in plain sentences, where it can be argued with.
Section 02 · Index
Six free titles, in order of how often we reopen them
Every title below installs free from Google Play and can be played without purchases. Ratings, developers and categories are taken from each game's own Play listing.
Ranked by return visits
All free to install
-
01
Flow Free
4.6 Google Play · 1.55M reviewsJoin the matching dots so the coloured paths never cross, then keep filling until every square on the board is covered. A small board is done in under a minute; the larger packs turn into a slow, careful sit. The interface has barely changed in years, and that steadiness is exactly why it survives on a home screen.
View on Google Play Big Duck Games LLC -
02
Nonogram.com - Puzzle Games
4.5 Google Play · 898K reviewsNumbers along the rows and columns tell you how many cells to fill; the picture only appears once the logic holds. Early boards teach the counting habit in a few minutes, then the bigger grids start demanding real bookkeeping. Daily and seasonal sets give a reason to come back, and the pixel art at the end is a quietly good payoff.
View on Google Play Easybrain -
03
Sudoku.com - Sudoku Puzzle
4.6 Google Play · 2.46M reviewsA clean reading of classic sudoku with pencil notes, a forgiving undo history and difficulty steps that run from a five-minute break to a long evening. The Easy tier is genuinely easy, which matters more than it sounds. Statistics per difficulty are the only pressure the app ever applies, and they are easy to ignore.
View on Google Play Easybrain -
04
Jigsaw Puzzles - Puzzle Games
4.5 Google Play · 2.35M reviewsA deep library of photographic jigsaws with piece counts you can dial from a gentle dozen up to several hundred. Progress is saved per puzzle, so an evening's work can be picked up days later exactly where it stopped. There is no timer and no failure state — only the tray slowly emptying — though ad breaks arrive often enough that you should plan around them.
View on Google Play Easybrain -
05
Wordscapes
4.6 Google Play · 1.42M reviewsSwipe letters around a wheel to fill a crossword-shaped board, one calm level at a time. The opening stages are quick vocabulary warm-ups; later packs stretch out and reward patience far more than speed. Muted backdrops and ambient sound do most of the work in keeping the whole thing unhurried.
View on Google Play PeopleFun -
06
Cut the Rope
4.2 Google Play · 2.7M reviewsSlice ropes, time the swings and steer the candy to Om Nom through boxes of increasingly odd contraptions. Each level is a small physics question with one tidy answer, and the three-star goal gives replays a point. Years on, the animation still carries it — the lower rating comes almost entirely from how frequently ad breaks land between attempts.
View on Google Play ZeptoLab
Section 03 · Fresh
New collections, and what changed in the index
Collections group titles by the shape of the session rather than by category — how much attention a game asks for, and how easily it lets you stop.
Updated monthly
Screens captured on device
Under five minutes
Boards you can finish before the tram arrives. Both titles save mid-puzzle, so nothing is lost if you have to close the app on the platform.
Flow Free
Sudoku.com
Letters and lines
Two very different ways to think in a grid: one builds words from a wheel, the other builds a picture out of counted cells. Good company for a quiet half hour.
Wordscapes
Nonogram.com
The Sunday table
Longer sits for an afternoon with the kettle on. Neither punishes you for walking away, which is the whole reason they belong together.
Jigsaw Puzzles
Cut the Rope
- 12 August 2026 Cut the Rope re-tested after the winter update; Play rating re-checked and the interruption note rewritten.
- 05 August 2026 Jigsaw Puzzles moved into the Sunday table collection after two weeks of long-session testing.
- 28 July 2026 Nonogram.com daily boards followed for a fortnight; entry updated with notes on the larger grids.
- 16 July 2026 Index reordered by return visits rather than by category, after reader letters asked for it.
Section 04 · Voices
What players wrote on Google Play
Quoted from public reviews on the Play listings of the titles in our index. Trimmed for length only — never reworded, and never moved from one game to another.
Public Play reviews
Four stars and above
“According to my achievements, I've been playing since 2017. Still love it and still an absolute solid fav.”
“No dozen pop ups when you open the game, no energy system to penalize you for playing, just a nice simple puzzle game.”
“I've been planning to go back to the patterns I've discovered and turn them into mini cross-stitch images.”
“Fun way to spend time and work your brain just a little bit.”
“Classic game that never gets old. I always come across a level that'll stump me for a little!”
Author names appear as they are shown on Google Play. RetroIntel does not collect, publish or edit reader reviews of its own — if a quote is wrong, write to the desk and we will pull it.
Section 05 · Briefing
One letter a week, no more than that
New entries, collection changes and the occasional short piece on a mechanic worth stealing. Leave whenever you like — the unsubscribe link sits at the top of every letter.
Weekly · English
Australian desk
You are on the list. The next briefing goes out on Thursday — if you allowed notifications, the alert arrives at the same time.
- Every new index entry, with the note that made it move up or down.
- An optional browser alert when a collection is rebuilt — off unless you allow it.
- Reader-plan letters carry the long-form breakdowns and the archive links.
- Name and email only. No phone number is asked for anywhere on this site.
Section 06 · Questions
Reasonable questions about how this works
Ask the desk anything
we answer in the letter
Yes. The whole index, every note and every collection is open to anyone, with no account required. The optional reader plan adds long-form pieces and the archive, but nothing in the index is hidden behind it.
Two ways: advertising placements on the site, and the optional reader plan described in the plans section. Some links to Google Play are promoted placements and are labelled where they appear. A placement never changes an entry's note or its position in the index — the full disclosure is in our terms.
Each figure is the public Google Play rating of that exact title, read on the day the entry was written and re-checked when an entry is revised. We do not publish a score of our own, and we never move a rating between titles.
All six install free from Google Play and are playable without purchases. Several offer optional in-app items or an ad-free upgrade; where that materially changes the pace of play, the entry says so.
Long-form breakdowns of the titles in the index, mechanics teardowns, early access to collections and the full archive of past pieces. Billing is monthly or yearly in Australian dollars and can be cancelled at any time; the conditions are set out in our terms.
Every letter carries an unsubscribe link that works immediately. Browser notifications can be switched off in your browser's site settings, or by writing to the desk and asking us to remove the subscription record. Details are in the privacy notice.
Section 07 · Plans
Read free, or support the desk
These plans are for RetroIntel itself — they have nothing to do with purchases inside any game. Prices are in Australian dollars and include GST.
Cancel any time
Refunds under our terms
Free
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Per month · billed monthly
- Everything in Free
- Long-form editorial breakdowns
- Mechanics teardowns, one a fortnight
- Early access to new collections
Archive
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- Everything in Reader
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Card details are never collected on this site and there is no checkout here. Our payment provider is still being activated: choose a plan, leave your address in the briefing form above, and we will write to you the moment billing opens. Subscriptions renew until cancelled, cancellation takes effect at the end of the paid period, and refunds are handled as described in the terms.
Section 08 · Trust
Safety, data and where the funding comes from
RetroIntel is operated from Australia and handles personal information under the Privacy Act 1988 and the Australian Privacy Principles.
Privacy Act 1988
Regulator: OAIC
What we store
Your name if you give one, your email address, and a browser subscription identifier if you allow notifications. Nothing else is requested — there is no phone field on this site and no account to create.
Who processes it
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Advertising disclosure
The site is funded by advertising placements and by the optional reader plan. Promoted links are labelled where they appear and are never allowed to change an entry's note, its rating line or its place in the index.
Not affiliated
RetroIntel is independent of Google and of every studio listed here. App icons, screenshots and titles remain the property of their rights holders and are used to identify the games under review.
You can ask us to access, correct or delete the information we hold about you at any time by writing to the desk. If you are not satisfied with our answer, you may complain to the Office of the Australian Information Commissioner (OAIC). Full detail sits in the privacy notice, the cookie notice and the terms.