Comparison

Flat vs Hidden Blocks

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

Head to head
About

Flat

A minimalist 3D puzzle game where players move cubes into black holes to flatten the board. It offers 50 stages with increasing complexity and intuitive swipe controls for an immersive experience.

Highlights
  • 3D puzzle gameplay
  • Minimalist design
  • 50 challenging stages
  • Intuitive swipe controls
  • Progressive mechanics
Features
Read full description

Flat is a 3D puzzle game where you slide cubes to make the board flat. ■ How to Play Swipe to slide the cubes into the holes on the board. Fill every hole to make the board flat and clear the stage. ■ 50 Stages As you progress, new gimmicks appear: one-way tiles, switches, breakable cubes, splitting tiles and more. ■ Daily Stage A new stage is added every day. You can also play past days from the calendar. ■ Show Answer If you get stuck, the solution plays automatically so you can see how to solve it. ■ Share When you clear a daily stage, you can share an image of the board and your move count.

About

Hidden Blocks

This 3D logic puzzle challenges you to count blocks in stacked structures, including those hidden from view. It offers daily puzzles, practice modes, and competitive stages with leaderboards. Sharpen your spatial reasoning skills with engaging brain teasers.

Highlights
  • 3D block counting puzzles
  • Count all or hidden blocks
  • Daily challenges
  • Practice mode
  • Timed stages with leaderboards
  • Spatial reasoning training
Features
Read full description

How many blocks? Look again. Some blocks are in plain sight. Others hide behind the stack. HIDDEN BLOCKS is a 3D block-counting logic puzzle where the real challenge is figuring out what you can't see. Study the stack, picture the hidden layers, and choose your answer. Simple to understand. Surprisingly tricky to solve. ▣ TWO MODES. TWO WAYS TO THINK. ● Count All Blocks Work out the total number of blocks, including the ones hidden from view. Every layer counts. ● Find Hidden Blocks Count only the blocks you can't see. Look beyond the visible faces and imagine what completes the stack. ▣ SMALL STACKS. BIG AHA MOMENTS. Start with simple shapes and progress to trickier, multi-layer structures. Use spatial reasoning to work out each answer. That satisfying moment when the whole stack makes sense? That's the fun. ▣ A FRESH PUZZLE EVERY DAY Daily Blocks gives you a new challenge each day. Take on the same daily puzzle as other players and see how your solve time compares. ▣ JUST FEEL LIKE A PUZZLE? Practice serves up a random puzzle each time. No stars, records, or rankings. Warm up before a stage or enjoy another little challenge. ▣ HOW FAR CAN YOU GO? Solve within the time limit, earn stars, and keep moving through the stages. Compare your stage progress with players around the world on the global leaderboard. ▣ A NOTEBOOK FULL OF PERSONALITY Warm paper, blue-ink answer marks, and three playful block companions give each challenge a little character. Clean puzzle layouts keep the focus on the blocks, while the Cubie trio brings the celebrations. Enjoy logic puzzles, visual brain teasers, or number challenges? Discover a different kind of block puzzle: count the stack and imagine what lies out of sight. ▣ WHERE THE IDEA CAME FROM Counting stacked unit cubes is a classic spatial reasoning exercise found in math curricula around the world — Common Core in the US, Singapore Math, the UK National Curriculum, and more. It trains the same 3D thinking that engineers, architects, and pilots use every day. HIDDEN BLOCKS takes that proven concept off the classroom page and turns it into a competitive daily brain game. There's more to every stack than meets the eye. #brain_training #spatial_reasoning #block_puzzle #logic_game #unit_cubes #3D_thinking #IQ #math_puzzle #puzzle_game #brain_game #hidden_blocks #casual_game #mind_game #focus #cube #counting #visual_puzzle #logic_puzzle #mental_training #block_counting

Screenshots

Flat4 screens
Hidden Blocks4 screens

Verdict

The call

The clearest difference is in-app purchases: Flat at none against Hidden Blocks's 9. Hidden Blocks's advantage is iOS requirement (15.0 vs 18.0). On price, update cadence, ads and device support 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. Hidden Blocks sells 9 one-off in-app purchases. Flat asks for nothing beyond the download.

UpkeepUpdate frequency

Flat ships an update every 2 weeks, Hidden Blocks weekly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
Flat versus Hidden Blocks: the parameters behind the verdict, then further details
ParameterFlatHidden Blocks
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings—1 — better
Update frequencyEvery 2 weeksWeekly — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size102 MB89 MB
Age rating4+4+
Developermasanao matsuiLogan Land

Customer experience

Flat

Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Hidden Blocks

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Flat

No in-app purchases

9 purchases

Hidden Blocks

One-time9
  • 10 Gems$0.99
  • 20 Gems$1.99
  • Unlimited Play · 3 Hours$2.99
Show 6 more
  • 50 Gems$4.99
  • Unlimited Play · 24 Hours$6.99
  • Remove ads$7.99
  • 125 Gems$9.99
  • 250 Gems$19.99
  • 700 Gems$49.99

Questions

Is Flat free?
Flat is free to download, with no in-app purchases.
Is Hidden Blocks free?
Hidden Blocks is free to download, with in-app purchases available.
Do Flat or Hidden Blocks have ads?
Both Flat and Hidden Blocks show ads.
Which is updated more often, Flat or Hidden Blocks?
Flat ships an update every 2 weeks, and Hidden Blocks weekly. Most recently, Flat was updated on October 24, 2026 and Hidden Blocks on October 28, 2026.

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