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Click The Difference - Coral Reef

Click the 16 differences on the LEFT hand picture. Careful, click wrong and you're shark food!
Quiz by
overtired
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Last updated: December 17, 2025
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First submittedNovember 14, 2024
Times taken4,220
Average score62.5%
Rating4.67
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Sudden Death. Clicking a wrong answer ends the quiz!
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Wrong colour fish green/purple top left
 
 
 
 
 
Shark gills
 
 
 
 
 
 
 
 
Shark tooth
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Missing purple fish
 
 
 
 
Blue fish's eye looking different directions
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Jeppy missing a spike
 
 
 
 
 
 
 
 
 
Yellow fish missing a fin
 
 
 
 
 
 
Bubble over pink coral on right
 
 
 
 
 
 
 
 
Lone bubble in centre
 
 
 
 
 
 
 
Orange coral finger on the left
 
 
 
 
 
 
 
 
 
Dark spot on rock on the left
 
 
 
 
 
 
Missing spot on orange fish
 
 
 
 
 
 
 
Missing mouth on pink fish
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Longer tentacle on octopus
 
 
 
 
 
 
Extra finger on yellow coral
 
 
 
 
 
 
 
 
 
Extra bubble over central coral
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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25 Comments
overtired
+2
Level 88
Nov 14, 2024
Want this to be a medium challenge, but let me know if any of the differences are too tricky, I can make them easier. Can also add more time if it's too tight!
FreeStater
+3
Level 81
Nov 14, 2024
Really cool quiz. Really hard, too.
overtired
+1
Level 88
Nov 14, 2024
Added some more time if that helps.
cathlete
+2
Level 78
Nov 14, 2024
Beautiful
cathlete
+4
Level 78
Nov 14, 2024
...but very difficult. I used the whole time and just could not find the last few
MayaB
+7
Level 73
Nov 14, 2024
Very creative way of using the sudden death mechanic! It's challenging but for me the difficulty level is just right. :)
baptistegorce
+4
Level 57
Nov 14, 2024
Technically stunning, creatively amazing.
overtired
+2
Level 88
Nov 14, 2024
Thanks very much!
Insaniot
+3
Level 63
Nov 14, 2024
Surprisingly difficult! I managed to find all but four. Looking at the hints make it seem so obvious, but I'm still not able to find anything different about the orange coral lol. Hope you make more of these, this was fun.
overtired
+1
Level 88
Nov 14, 2024
I've made the orange coral more obvious. Yep, more coming. Next one should be easier...!
Dimby
+2
Level 83
Nov 14, 2024
Gonna be honest... turned off the timer and I've been looking at this for well over 20 minutes and for the life of me I cannot find the last one. I refuse to give up!
overtired
+3
Level 88
Nov 14, 2024
Ouch, which one was it? I can hazard a guess...

You may find that when you refresh the quiz it has become easier. I've just made some changes to the least found answers.

Should I increase the time? It's hard to know how tricky the quiz is when you made it.

Dimby
+4
Level 83
Nov 14, 2024
Argh. It took me an HOUR! Ha ha. Looking at the updates, yeah, that extra pokey pokey thing helps a lot. I didn't have much trouble spotting anything until about 5 items left on the OG version. Some of the ones you edited were actually ones I spotted right off. That was fun! Is this just in the Sudden Death mode? My goodness, I have an idea how I'd do this (actually I'd just do it as a Text version without zoom-in and use onclick scripting), but holy heck is this ever neat.
overtired
+1
Level 88
Nov 14, 2024
Yikes, sorry! Appreciate the commitment though, and glad you enjoyed it. I'd guessed it was the octopus, but that bit of coral was my next guess. Yep, used Sudden Death mode.
hi111223
+1
Level 70
Nov 14, 2024
Dream come true! Awesome quiz
KiloNova
+1
Level 61
Nov 14, 2024
It's quite hard, but I love a good challenge

:)

Elboy
+3
Level 75
Nov 14, 2024
Not as easy as it seemed at first look. Anyway it's so fun to see this kind of game coded on JetPunk, with an amazing design: another incredible achievement for overtired!
Imthedood
+1
Level 57
Nov 15, 2024
Really cool quiz! I think the time is good. Some of those differences are tricky, but definitely gettable if I had looked a little closer.

5 stars!

Fifi567
+1
Level 32
Nov 29, 2024
Amazing quiz! Nominated for sure!
Capybarra
+1
Level 45
Dec 1, 2024
Very hard, nominated for the SVG and idea!
ghtiddy
+4
Level 56
Dec 7, 2024
On the blue fish under the shark, if you look at the bottom right fin, you can see that the lines are going in different directions, but it doesn't recognise that as an answer.
overtired
+2
Level 88
Dec 7, 2024
Great spot. Sorry about that. I realise what happened now but it was unintentional. I’ll fix it when I get a chance. Can’t do it for a few days as I’m away from my computer. Thanks for letting me know!
LisaWitch
+1
Level 47
Jun 30, 2025
I love it, except for the fact that I got 15/16, and still don’t know what I’m missing!
Aoto327
+1
Level 87
Feb 24, 2026
Got them all, 16/16, fun!
cocachiantos
+1
Level 75
Mar 7, 2026
On the topmost dark blue fish, the light blue wave pattern differs on its bottom right fin but is not marked as a difference between the two pictures
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