Primary Particle vs Don't Touch the Red
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- Particle stabilization gameplay
- Color-matching mechanic
- Increasing difficulty
- Score-based progression
- Experiment simulation
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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!
Don't Touch the Red
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DON'T TOUCH RED — the one-finger survival arcade where every red thing kills. Move your glowing orb. Dodge red lasers, falling walls, spinning blades, and chasing projectiles. Stay alive. Get further every run. Built for the "one more try" moment. ONE RULE Anything red ends your run. ENDLESS, HARDCORE, ZEN Three modes. Start chill. End in panic. NEAR-MISS COMBOS Pass close to red and time slows. Score multiplies. Pure dopamine. MINIMALIST NEON Black + white + the most dangerous red you've ever seen. MADE FOR SHORT SESSIONS 30 seconds in line. 30 minutes in bed. Same game. No ads forced on you — watch a quick ad ONLY when you choose to revive. Made by a solo developer. Built to be replayed. How long can you last before you touch red?
Screenshots
Verdict
The clearest difference is ads: Primary Particle at none against Don't Touch the Red's shown. Primary Particle also leads on iOS requirement (12.0 vs 14.0). Don't Touch the Red's advantage is update cadence (daily vs every 8 months). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Primary Particle ships an update every 8 months, Don't Touch the Red daily. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | Primary Particle | Don't Touch the Red |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 8 months | Daily — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 47 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Stefan Schmitt | Birkan Aksoy |
In-app purchases
Primary Particle
No in-app purchases
Don't Touch the Red
No in-app purchases
Questions
Is Primary Particle free?
Is Don't Touch the Red free?
Do Primary Particle or Don't Touch the Red have ads?
Which is updated more often, Primary Particle or Don't Touch the Red?
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