Comparison

Crazy Contraptions DRAW! vs Chain Reaction

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

Head to head
About

Crazy Contraptions DRAW!

Features
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What will you draw to make it work? Welcome to Crazy Contraptions DRAW!, a physics puzzle game where the contraption is already built โ€” but something is missing. Your solution. Study the level, then use your finger to draw whatever you think will make the contraption work. Build a ramp. Draw a bridge. Block a path. Bounce a ball. Drop some weight. Or come up with something completely unexpected. You have a limited amount of ink, so make every drop count. When you're ready, hit GO and watch your drawing come to life with real physics. Did it work? Great! Did everything go horribly wrong? Reset the level, try something different, and hit GO again. THREE TYPES OF PHYSICS INK Different levels give you different kinds of ink, and each one changes how you approach the puzzle. BLUE โ€” HEAVY INK Draw it and gravity takes over. Use falling shapes, weights, ramps, barriers and whatever else you can dream up. PINK โ€” FLOATING INK What goes down doesn't always have to stay down. Pink ink floats upward like a balloon, opening up a completely different set of possibilities. GREEN โ€” BOUNCY INK Boing! Green ink behaves like bouncy rubber. Draw shapes that bounce, rebound and send objects flying. TONS OF PHYSICS PUZZLES Every level gives you a new problem to solve. Get basketballs, soccer balls, bowling balls and more into their targets. Guide marbles into a fishbowl. Pop balloons. Drop objects into buckets and paint cans. And discover plenty of other crazy challenges along the way. The goal may be simple. Figuring out what to draw is the tricky part. THERE'S NO PERFECT LINE This isn't about tracing the "correct" shape. Draw your solution your way. A rough little ramp might work. A giant bouncing blob might work better. Sometimes an elegant solution wins, and sometimes the ridiculous one does. Experiment, fail, reset and try again. FEATURES - Tons of hand-built physics puzzles - Draw freely with your finger - Limited ink makes every drawing matter - Three unique ink types: Heavy, Floating and Bouncy - Tons of balls, balloons, marbles, buckets and other interactive objects - Creative physics-based solutions - No timers or pressure - Easy to learn and fun to experiment with - Reset and try something completely different whenever you want Think it. Draw it. Hit GO. Then watch your crazy contraption come to life.

About

Chain Reaction

Features
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One clever move. One glorious machine. Chain Reaction is a hand-crafted physics puzzle game about building the missing piece of an elaborate chain-reaction machine โ€” then pressing GO and watching everything you set in motion ripple across a miniature workshop. Drop a ramp in the right spot and a steel ball rolls, dominoes topple, a trapdoor swings, a catapult fires and a bell rings on the far side of the bench. Get it wrong and you'll see exactly where the chain broke โ€” tweak, retry, and try again in seconds. EIGHT WORKSHOP WORLDS โ€ข The Workbench โ€” ramps, planks, levers and domino runs โ€ข Clockwork House โ€” pendulums, gears, pulleys and hammers โ€ข Toy Lab โ€” springs, fans, balloons, catapults and explosive confetti poppers โ€ข Flowworks โ€” tanks, valves, pipes, water wheels and floats โ€ข Magnetron โ€” magnets, polarity and electromagnets โ€ข Spark City โ€” batteries, wires, motors, relays and lights โ€ข Elemental Engine โ€” flames, steam, wax, ice and melting โ€ข Quantum Workshop โ€” portals, gravity fields and energy beams 256 HAND-BUILT PUZZLES Every level is designed by hand and verified solvable, with a real solution, a fair challenge and three stars to earn: finish the machine, use as few parts as possible, and master a bonus goal. A NEW MACHINE EVERY DAY Daily Machines and a Weekly Challenge are generated fresh and verified solvable โ€” come back and beat your best score. YOUR OWN WORKSHOP Unlock over 100 parts, collect blueprints, decorate your workshop with trophies, finishes and ball trails, and build anything you like in the Sandbox. FAIR AND FRIENDLY โ€ข Play offline, any time โ€ข Hints when you want them โ€” never required โ€ข No energy timers, no forced waits โ€ข Optional rewarded videos; a one-time purchase removes ads โ€ข Colour-blind assist, large-text UI, reduced motion and full haptics control Satisfying physics, beautiful miniature dioramas and that perfect moment when the last domino falls. Build your chain reaction.

Screenshots

Crazy Contraptions DRAW!4 screens
Chain Reaction4 screens

Verdict

The call

The clearest difference is update cadence: Chain Reaction at every 2 days against Crazy Contraptions DRAW!'s fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Crazy Contraptions DRAW! sells 1 one-off in-app purchase and Chain Reaction sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Crazy Contraptions DRAW! ships an update fortnightly, Chain Reaction every 2 days. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

Scorecard1 real difference ยท 5 level
Crazy Contraptions DRAW! versus Chain Reaction: the parameters behind the verdict, then further details
ParameterCrazy Contraptions DRAW!Chain Reaction
PriceFreeFree
Update frequencyFortnightlyEvery 2 days โ€” better
AdsYesYes
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details โ€” not scored
Size367 MB206 MB
Age rating4+4+
DeveloperDave ShworanAbdul Aleem Allie

In-app purchases

1 purchases

Crazy Contraptions DRAW!

One-time1
  • Remove Ads$2.99
10 purchases

Chain Reaction

One-time10
  • Pouch of Coins$0.99
  • Handful of Sparks$1.99
  • Remove Ads$3.99
Show 7 more
  • Golden Hour Theme$3.99
  • Sack of Coins$4.99
  • Jar of Sparks$4.99
  • Tesla Coil Pack$4.99
  • Premium Event Pass$4.99
  • Chest of Coins$9.99
  • Crate of Sparks$14.99

Questions

Is Crazy Contraptions DRAW! free?
Crazy Contraptions DRAW! is free to download, with in-app purchases available.
Is Chain Reaction free?
Chain Reaction is free to download, with in-app purchases available.
Do Crazy Contraptions DRAW! or Chain Reaction have ads?
Both Crazy Contraptions DRAW! and Chain Reaction show ads.
Which is updated more often, Crazy Contraptions DRAW! or Chain Reaction?
Crazy Contraptions DRAW! ships an update fortnightly, and Chain Reaction every 2 days. Most recently, Crazy Contraptions DRAW! was updated on October 31, 2026 and Chain Reaction on October 24, 2026.

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