Comparison

Fill Shikaku vs PolyBlocks Vision VR

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

Head to head
About

Fill Shikaku

Engage in a classic Japanese logic puzzle. Divide a grid into rectangular and square regions, ensuring each region contains a single number that matches the number of cells within that region. It's a test of spatial reasoning and strategy.

Highlights
  • Classic Shikaku puzzle gameplay
  • Divide grid into rectangular/square pieces
  • Each number represents cell count
  • Simple click and drag interface
  • Multiple difficulty levels (implied by 'classic game')
Features
Read full description

A classic Shikaku japanese game: divide the grid into rectangular and square pieces! Rules : - Each number has to be contained in a piece (rectangle or square), - Each piece can only contain a single number, - The number represents the number of cells that have to be contained into the piece. Simply click and drag to make a rectangle, gook luck! Terms & Conditions : https://www.voodoo.io/terms/ Privacy Policy : https://www.voodoo.io/privacy/

About

PolyBlocks Vision VR

Features
Read full description

PolyBlocks Vision VR is a virtual reality puzzle game designed to support players with lazy eye (amblyopia & strabismus). Drawing inspiration from visual therapy research, it offers an entertainment-based experience that takes a fun-first approach to improving binocular vision through engaging, eye-coordinated gameplay. Core Premise Control falling blocks, place them strategically, and clear lines in a unique dual-screen system where: - One eye sees falling blocks - The other eye sees placed blocks - Your brain combines both images into one complete picture to successfully play the game and exercise your binocular vision Core Gameplay - Rotate and place blocks to complete lines - Clear lines to continue progressing - Each eye contributes part of the solution - A fresh twist on classic puzzle gameplay What You'll Need - Smartphone VR Headset (e.g., Google Cardboard) - Bluetooth Controller (PlayStation, Xbox, 8BitDo, and more) Key Features Screen Calibration - Adjust screen placement to match your eyes and align based on your degree of strabismus or eye misalignment (e.g., exotropia, esotropia, hypertropia, hypotropia, etc.) - Supports a range of visual conditions Configurable Controls - Fully re-mappable controls across gameplay and menus - Compatible with Bluetooth-enabled controllers - Customize your playstyle for comfort and control Accessibility Settings - Toggle which eye sees falling blocks - Enable or disable animations (background and blocks) - Adjust brightness (alpha) for each eye, helping balance visual input for players with amblyopia (lazy eye) - Personalize your experience for clarity and comfort Building Back Vision, One Block at a Time While inspired by medical studies on visual therapy, PolyBlocks Vision VR is not an FDA approved treatment. Health Drop Games LLC (c) 2026 Patent Pending

Screenshots

Fill Shikaku4 screens
PolyBlocks Vision VR4 screens

Verdict

The call

The clearest difference is in-app purchases: PolyBlocks Vision VR at none against Fill Shikaku's 10. PolyBlocks Vision VR also leads on ads (none vs shown). On price, device support and iOS requirement 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. Fill Shikaku sells 10 one-off in-app purchases. PolyBlocks Vision VR asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Fill Shikaku versus PolyBlocks Vision VR: the parameters behind the verdict, then further details
ParameterFill ShikakuPolyBlocks Vision VR
PriceFreeFree
Rating4.5 (3.2K ratings) — better—
Positive reviews17.5% of reviews—
Number of ratings3.2K — better—
Update frequencyFortnightly—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.013.0 — better
Further details — not scored
Size174 MB189 MB
Age rating17+4+
DeveloperVoodooHealth Drop Games LLC

Bugs and requests

Fill Shikaku

Reported bugs

3 issues
  • Level 217 is unsolvable due to incorrect number placement
  • Level 484 is impossible to complete
  • Inability to claim rewards or progress past certain levels

Requested features

3 requests
  • Option to skip or bypass certain levels
  • More varied and challenging puzzle types
  • Ability to save progress and resume later

PolyBlocks Vision VR

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Fill Shikaku

One-time10
  • Extra Time$0.49
  • Infinite life$1.99
  • Remove all ads$2.99
Show 7 more
  • Buy 100 Stars$2.99
  • Remove Ads$4.99
  • Remove all ads$4.99
  • Stars Pack 2$4.99
  • Stars Bundle$7.99
  • Unlock all daily puzzles 2022$9.99
  • Stars Pack 3$9.99
None

PolyBlocks Vision VR

No in-app purchases

Questions

Is Fill Shikaku free?
Fill Shikaku is free to download, with in-app purchases available.
Is PolyBlocks Vision VR free?
PolyBlocks Vision VR is free to download, with no in-app purchases.
Do Fill Shikaku or PolyBlocks Vision VR have ads?
Fill Shikaku shows ads; PolyBlocks Vision VR does not.

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