Flat vs Hidden Blocks
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- 3D puzzle gameplay
- Minimalist design
- 50 challenging stages
- Intuitive swipe controls
- Progressive mechanics
Read full descriptionHide 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.
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.
- 3D block counting puzzles
- Count all or hidden blocks
- Daily challenges
- Practice mode
- Timed stages with leaderboards
- Spatial reasoning training
Read full descriptionHide 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
Verdict
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
Both are free to download. Hidden Blocks sells 9 one-off in-app purchases. Flat asks for nothing beyond the download.
Flat ships an update every 2 weeks, Hidden Blocks weekly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.
| Parameter | Flat | Hidden Blocks |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 weeks | Weekly — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 102 MB | 89 MB |
| Age rating | 4+ | 4+ |
| Developer | masanao matsui | Logan Land |
Customer experience
Flat
Hidden Blocks
In-app purchases
Flat
No in-app purchases
Hidden Blocks
- 10 Gems$0.99
- 20 Gems$1.99
- Unlimited Play · 3 Hours$2.99
Show 6 moreShow fewer
- 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









