Comparison

Blob Merge 3D 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

Blob Merge 3D

Merge colorful blobs to achieve the highest score possible. Enjoy intuitive controls and addictive gameplay that keeps you engaged.

Highlights
  • Blob merging gameplay
  • High score challenges
  • Intuitive slide controls
  • Addictive mechanics
Features
Read full description

Merge blobs to get highest possible score! Slide easy-to-learn controls with addictive gameplay mechanic!

About

PolyBlocks Vision VR

Features
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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

Blob Merge 3D4 screens
PolyBlocks Vision VR4 screens

Verdict

The call

The clearest difference is in-app purchases: PolyBlocks Vision VR at none against Blob Merge 3D's 1. 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. Blob Merge 3D sells 1 one-off in-app purchase. PolyBlocks Vision VR asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Blob Merge 3D versus PolyBlocks Vision VR: the parameters behind the verdict, then further details
ParameterBlob Merge 3DPolyBlocks Vision VR
PriceFreeFree
Rating3.6 (2.3K ratings) — better—
Positive reviews22.0% of reviews—
Number of ratings2.3K — better—
Update frequencyMonthly—
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
Size296 MB189 MB
Age rating12+4+
DeveloperVoodooHealth Drop Games LLC

Bugs and requests

Blob Merge 3D

Reported bugs

3 issues
  • Gameplay freezes
  • Progress loss after reinstallation
  • Compatibility issues with newer devices

Requested features

3 requests
  • Reduce ad frequency
  • Restore previous gameplay mechanics
  • Add more customization options

PolyBlocks Vision VR

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Blob Merge 3D

One-time1
  • No Ads$2.99
None

PolyBlocks Vision VR

No in-app purchases

Questions

Is Blob Merge 3D free?
Blob Merge 3D 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 Blob Merge 3D or PolyBlocks Vision VR have ads?
Blob Merge 3D shows ads; PolyBlocks Vision VR does not.

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