Comparison

! Exploding Paintballs ! vs Primary Particle

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

Head to head
About

! Exploding Paintballs !

A tilt-sensitive arcade game where players link and explode colored paintballs. Compete with friends on leaderboards for high scores and unlock more levels through in-app purchases. Experience realistic physics and varied explosion sounds.

Highlights
  • Tilt or touch controls
  • Physics-based gameplay
  • Link and explode colored paintballs
  • Realistic explosion sounds
  • Game Center leaderboards
  • Unlockable levels via IAP
Features
Read full description

!Exploding Paintballs! is a tilt-sensitive arcade game with paintballs that float (blue and green) and paintballs that sink (red and yellow). When certain color combinations of paintballs touch they link together and, when the link is complete, explode with a loud realistic explosion noise. The color combinations that will explode vary with each Level. The Game Center records various scores on Leaderboards such as number of Levels completed, number of explosions, best times for certain Levels and best times for all Levels combined. Compete with your Game Center Friends to see who can make the most explosions or who can get 10 explosions on one or all Levels the fastest. Gravity is adjusted by tilting the iPhone, iPad or iPod Touch. Alternatively, !Exploding Paintballs! can respond to touch moves rather than tilt. The exploding noise differs for the different color combinations that explode (e.g. gunshots, crashes, bombs). The sound can be turned off or made into a vibration. There are 8 free Levels - 4 with walls and 4 without walls. An In App Purchase expands the number of Levels to 66 - 33 Levels with walls and 33 Levels without walls. !Exploding Paintballs! is based on a kinetic simulation using the device's accelerometer and realistic principles of physics (buoyancy, inertia, viscosity, Hooke's Law and color confinement). For accuracy and stability it uses a half step modification to Euler's Algorithm as described by Feynman (Lectures on Physics, Vol. 1, Ch. 9, P. 5) and Cromer (Am. J. Phy. 49, 455 (1981)). The screen shots below are: 1) Free Level 1 - Red-Blue. A red-blue combination is shown exploding. 2) The Levels Table. The 4 free Levels are shown together with the Best Times and maximum number of Explosions. 3) Free Level 2 - Red-Blue, Yellow-Green. A red-blue (yellow-green for iPad) combination is shown exploding. 4) Free Level 3 - Blue-Yellow-Green. Some partial combinations are shown linked and one blue-yellow-green is shown exploding. 5) Free Level 4 - Red-Green-Green-Loop. Some partial combinations for the loop are shown linked and one red-green-green-loop is shown exploding.

About

Primary Particle

A fun puzzle game where players help a scientist stabilize particles in an experiment. Catch particles of the correct color to keep the experiment going and increase your score. Beware of tricky particles that appear as your skill level rises.

Highlights
  • Particle stabilization gameplay
  • Color-matching mechanic
  • Increasing difficulty
  • Score-based progression
  • Experiment simulation
Features
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Art & Game Design by Ben Jelter Programming by Stefan Schmitt A fun puzzle game for everybody! Help Dr. Hadron with his particle experiment. Keep the particles stable for as long as possible so Dr. Hadron can study them. Don't let the particles escape or the experiment will end. Catch the particles... but make sure they're the right color! As your skill increases, so does your score. Watch out for tricky particles as your level increases. The particle collider cost $9 Billion. Don't waste it!

Screenshots

! Exploding Paintballs !4 screens
Primary Particle4 screens

Verdict

The call

The clearest difference is in-app purchases: Primary Particle at none against ! Exploding Paintballs !'s 1. Primary Particle also leads on rating (5.0 vs 4.8) and iOS requirement (12.0 vs 15.6). ! Exploding Paintballs !'s advantage is update cadence (every 2 months vs every 8 months). On price, ratings volume, 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. ! Exploding Paintballs ! sells 1 one-off in-app purchase. Primary Particle asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Primary Particle holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 5 and 3 respectively.

UpkeepUpdate frequency

! Exploding Paintballs ! ships an update every 2 months, Primary Particle every 8 months. The most recent releases landed on August 20, 2026 and September 20, 2026 respectively.

Scorecard5 real differences · 5 level
! Exploding Paintballs ! versus Primary Particle: the parameters behind the verdict, then further details
Parameter! Exploding Paintballs !Primary Particle
PriceFreeFree
Rating4.8 (5 ratings)5.0 (3 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings5 — better3
Update frequencyEvery 2 months — betterEvery 8 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size9 MB47 MB
Age rating4+4+
DeveloperPeter KramerStefan Schmitt

Customer experience

! Exploding Paintballs !

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Primary Particle

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

! Exploding Paintballs !

One-time1
  • upgrade to play the Additional Levels$0.99
None

Primary Particle

No in-app purchases

Questions

Is ! Exploding Paintballs ! free?
! Exploding Paintballs ! is free to download, with in-app purchases available.
Is Primary Particle free?
Primary Particle is free to download, with no in-app purchases.
Which has better reviews, ! Exploding Paintballs ! or Primary Particle?
Primary Particle is rated higher. ! Exploding Paintballs ! averages 4.8 out of 5 from 5 ratings, while Primary Particle averages 5.0 from 3 ratings.
Do ! Exploding Paintballs ! or Primary Particle have ads?
Neither ! Exploding Paintballs ! nor Primary Particle shows ads.
Which is updated more often, ! Exploding Paintballs ! or Primary Particle?
! Exploding Paintballs ! ships an update every 2 months, and Primary Particle every 8 months. Most recently, ! Exploding Paintballs ! was updated on August 20, 2026 and Primary Particle on September 20, 2026.

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