Comparison

CRx vs Chain Reaction OG

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

Head to head
About

CRx

Engage in an addictive strategy game where players aim to control the board by eliminating opponents' orbs. Place orbs strategically, triggering chain reactions to claim cells and outmaneuver rivals. Enjoy single-player or multiplayer modes with elegant gameplay and theme variations.

Highlights
  • Multiplayer (2-8 players)
  • Eliminate opponent orbs
  • Chain reaction orb explosions
  • CPU mode for single-player
  • Theme variations (Black/White)
Features
Read full description

Experience the ultimate tactical chain-reaction board game! CRx is an addictive, fast-paced strategy game designed for 2 to 8 players. Challenge your cleverness, spark explosive combos, and dominate the board! The rules are simple, but the strategy is deep. Your goal is completely straightforward: take absolute control of the board by eliminating all of your opponents' colored orbs. One single move can trigger a massive chain reaction that completely flips the match! HOW TO PLAY: Take turns placing a colored orb into a cell on the grid. Once a cell reaches "critical mass," it explodes into all adjacent cells! The exploding orbs claim those surrounding cells for you, changing them to your color. You can only place orbs in blank cells or cells already containing your color. Trigger epic combos to wipe out your rivals - the last player standing with orbs wins! WHY YOU’LL LOVE CRx: Addictive Strategy & Combos: Watch a single placement explode across the entire board. Perfect for testing your spatial awareness and foresight. Local Multiplayer (2-8 Players): An incredible party game! Pass and play with a large group of friends or family on a single device. Smart AI Opponent: No friends nearby? Jump into CPU solo mode and test your strategic skill against our scaling computer AI. 100% Offline Play: No internet, data, or Wi-Fi required. Enjoy seamless tactical gaming anytime, anywhere. Clean & Minimalist Design: Switch effortlessly between elegant Black and White theme variations to match your style. Can you outsmart your friends and predict the next big explosion? Download CRx today, trigger the ultimate chain reaction, and claim the board!

About

Chain Reaction OG

Engage in a fast-paced local multiplayer strategy game for 2-8 players. Place atoms to trigger explosive chain reactions, capture the board, and eliminate opponents. Simple to learn but requires clever planning and timing for mastery.

Highlights
  • Local multiplayer for 2-8 players
  • Fast-paced strategy matches
  • Customizable board sizes and styles
  • Simple controls
  • No account required
  • Unlockable orb finishes and arena skins
Features
Read full description

Build critical mass. Trigger explosive chain reactions. Capture the entire board. Chain Reaction OG is a fast-paced local multiplayer strategy game for 2–8 players. Place your atoms, take control of the arena, and unleash powerful cascades that can transform the board in a single move. Every turn matters. Protect your territory, control valuable corners and edges, and wait for the perfect moment to start an unstoppable chain reaction. The rules are simple, but mastering the board takes clever planning, timing, and tactical thinking. # LOCAL MULTIPLAYER FOR 2–8 PLAYERS Gather friends and family for competitive pass-and-play matches on one device. No accounts, complicated setup, or lengthy tutorials—choose your players, select an arena, and start playing. # SIMPLE TO LEARN, HARD TO MASTER Place atoms inside your cells to build critical mass. When a cell reaches its limit, it explodes and spreads atoms into neighboring spaces. Capture rival cells, create massive combos, and eliminate every opponent to become the last player standing. One carefully planned move can trigger a board-clearing chain reaction. # CUSTOMIZE EVERY MATCH • Local pass-and-play multiplayer for 2–8 players • Fast, competitive strategy matches • Four board sizes: Small, Medium, Large, and Huge • Multiple orb finishes and arena styles • Smooth animations and satisfying chain reactions • Responsive, easy-to-use controls • No account required Whether you are looking for a quick two-player battle, a family party game, or an intense multiplayer strategy challenge, Chain Reaction OG makes every match unpredictable. # FREE TO PLAY Play Chain Reaction OG for free. Ads are shown between completed matches, so gameplay is never interrupted. # CHAIN REACTION PRO Upgrade to Chain Reaction Pro with a monthly subscription to: • Remove all ads • Unlock every orb finish • Unlock every arena skin Internet access is used for purchases, advertising, and diagnostics. # DISCLAIMER Chain Reaction OG is an independently developed game. It is not affiliated with, endorsed by, sponsored by, or officially connected to any other game developer, publisher, brand, product, or platform. Any third-party names or trademarks are the property of their respective owners. Gather your rivals, choose your board, and start the next explosive battle in Chain Reaction OG. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

CRx4 screens
Chain Reaction OG1 screens

Verdict

The call

The clearest difference is rating: CRx at 4.2 against Chain Reaction OG's 3.0. CRx also leads on ratings volume (26 vs 2) and iOS requirement (15.0 vs 18.0). Chain Reaction OG's advantage is in-app purchases (none vs 1) and update cadence (monthly vs every 3 months). On price, ads, monetization model 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. CRx sells 1 one-off in-app purchase. Chain Reaction OG asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CRx holds the better App Store score, 4.2 against 3.0. That said, the two scores are not equally well evidenced: CRx has 26 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

CRx ships an update every 3 months, Chain Reaction OG monthly. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

Scorecard5 real differences · 5 level
CRx versus Chain Reaction OG: the parameters behind the verdict, then further details
ParameterCRxChain Reaction OG
PriceFreeFree
Rating4.2 (26 ratings) — better3.0 (2 ratings)
Positive reviews69.2% of reviews—
Number of ratings26 — better2
Update frequencyEvery 3 monthsMonthly — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size64 MB50 MB
Age rating4+4+
DeveloperAbhishek AryanMayank Kumar Gupta

In-app purchases

1 purchases

CRx

One-time1
  • Remove Ads$1.99
None

Chain Reaction OG

No in-app purchases

Questions

Is CRx free?
CRx is free to download, with in-app purchases available.
Is Chain Reaction OG free?
Chain Reaction OG is free to download, with no in-app purchases.
Which has better reviews, CRx or Chain Reaction OG?
CRx is rated higher. CRx averages 4.2 out of 5 from 26 ratings, while Chain Reaction OG averages 3.0 from 2 ratings.
Do CRx or Chain Reaction OG have ads?
Both CRx and Chain Reaction OG show ads.
Which is updated more often, CRx or Chain Reaction OG?
CRx ships an update every 3 months, and Chain Reaction OG monthly. Most recently, CRx was updated on October 21, 2026 and Chain Reaction OG on October 25, 2026.

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