Are you ready to test your brainpower in our optical illusion code breaker?
Optical illusions have a special way of confusing the brain, making it see things that aren’t there or misinterpreting the things that are. These brain teasers will challenge your perception, creativity, and problem-solving skills.
Take a look and remember they get progressively harder, can you crack the code and join the elite sub 2% who can solve all four?
Optical Illusion 1:
Look closely. Can you find the camouflaged number in this colorful blur? Only those with exceptional vision can spot the 5-digit code that’s hidden in plain sight.
Optical Illusion 2:
This rainbow pattern isn’t just a mesmerizing design. Somewhere in the curves, a sequence of numbers is hiding. Can you spot it without getting hypnotized?
Optical Illusion 3:
This seemingly endless whirlwind of color conceals a code that is just waiting to be deciphered deep inside the spiral.
Concentrate! Do you see the code yet?
Optical Illusion 4:
It’s easy to ignore the problem when you’re drawn in by the swirling shapes. But if you can maintain focus, a string of numbers will begin to appear.
How did you do?
Don’t worry if you’re feeling stuck! These are supposed to be challenging illusions. Need some help?
Scroll down to see the answers and discover how your eyes deceived your brain.
Advertiser Disclosure: When you use WhichBingo, there are never any hidden fees or costs. To help fund our work we may earn a referral commission if you create an account via our site. This commission never impacts the impartiality of our reviews and ratings.
18+ New Customers. Opt in. Deposit & play £10 in any Bingo Room within 7 days. Get £50 on Bingo. Advertised £50 Bingo based on 10p tickets. Rewards expire after 7 days. T&Cs apply. | GambleAware.org | Please gamble responsibly. Full T&Cs Apply.
New Players Only. Wager from real balance first. 2X wager the bonus on Bingo games. The wagering requirement is calculated on bonus bets only. Bonus valid 30 days / Free spins valid 7 days from receipt. Max conversion: 1 time the bonus amount or from free spins: £20. Min Deposit £10 required. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms apply.
18+ New players only. Min deposit £10 and £10 stake on slot games required. 100 Free Spins on Big Bass Bonanza credited automatically. Free Spins value: £0.10 each. Free Spins expire 48 hours after crediting. No wagering on Free Spins; winnings paid as cash. Full T&C’s apply.
18+ New players only. Min deposit £10 and £10 stake on slot games required. 100 Free Spins on Big Bass Splash. Free Spins value: £0.10 each. No wagering on Free Spins; winnings paid as cash. Bingo tickets: Min deposit £10 and £10 real-money spend on Bingo required. Max ticket value £0.10. No wagering on ticket winnings; paid as cash. Tickets and free spins expire after 48 hours. Full T&C’s apply.
New players. Dep (Excl. PayPal & Paysafe) & spend min £5 (within 7 days) on selected slots for spins or £5 in selected bingo rooms – 5x wagering for bingo bonus. Individual promo T&Cs apply. Full T&Cs Apply.
18+. New members only, must opt in. Min £10 deposit & wager (excl. sports betting). 30 day expiry from deposit. Free Spins: on Double Bubble. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply. Gamble Responsibly. GambleAware.org #AD
18+. New players. Dep (Excl. PayPal & Paysafe) & spend min £5 (within 7 days) on Slots for spins on Fishin’ Frenzy or £5 on Bingo for bonus 6x wagering, selected rooms. T&Cs apply. Please gamble responsibly. GambleAware.org #AD. Full T&Cs Apply.
First deposit only. Min deposit £10. Bingo tickets valid up to £0.02 in the Feel the Fun room. 80 Free Spins on Big Bass Bonanza. Spin Value: £0.10. Excl. new players in N.I. This offer is only available for specific players that have been selected by PlayOJO. If you have arrived on this page not via the designated offer via PlayOJO you will not be eligible for the offer. Irregular play may lead to removal of reward. OJO’s Rewards and Game Play policy applies. Gambleaware.org #AD
18+. New customers only. From 10.12.24. Deposit & spend £10 within 7 days of registering and get a £60 Bingo Bonus (4x wagering). Claim & use within 7 days. Restrictions and T&Cs apply.
New Offer
Answers:
Optical Illusion 1:
The hidden number is 38441. It’s carefully camouflaged within the gradient of colors.
Optical Illusion 2:
The number you are looking for is 65452. Did you manage to spot it amidst the wave-like pattern?
Optical Illusion 3:
Hidden deep in the spiral is the number 78255. It’s easy to get lost in the spiral, but the number is there!
Optical Illusion 4:
The swirling shapes may have been distracting, but the number 67834 is hidden among them.
UK romantics are officially ditching roses, chocolates, and teddy bears in favour of experiences and memories. According to recent survey data, a massive 70.9% of Brits now prefer a shared experience over a physical gift. But, the survey of over 500 UK residents also revealed that nearly 64% of people agree that spending money isn’t a valid measurement of love. From fancy dinners to high-energy bingo raves, the focus has…
The time has arrived. The WhichBingo Awards 2026 voting is now open! It’s now over to you. Celebrate the very best in bingo, slots, and casino. The sites, the games, the teams, the food, the personalities… every vote makes the difference. If you missed what’s new this year, including the brand-new Pre-Show Awards, you can catch up in our What’s New for 2026 piece. For now though, the important bit…
Grab your dabbers bingo fans, the WhichBingo Awards 2026 are officially on the horizon. Now in our 13th year, the WhichBingo Awards are all about recognising the sites, games, venues, and people that players love. Winners are chosen through a mix of player votes, editorial insight, and expert opinion. From the bingo sites you keep coming back to, to the chat teams that make every session more fun, this is your chance to have your…
Our social star Charlie Shakespeare has been out on the road filming a brand-new, three-part documentary series, Inside Real Fun Group, taking us behind the scenes at three very unique bingo clubs. Different club names. Different looks. Same great game of bingo. The trailer for episode one goes live this Thursday at 5pm. Read on for the inside scoop. Who Is the Real Fun Group? As one of the UK’s largest independent bingo club…
Grab your dabbers bingo fans, the WhichBingo Awards 2026 are officially on the horizon. Now in our 13th year, the WhichBingo Awards are all about recognising the sites, games, venues, and people that players love. Winners are chosen through a mix of player votes, editorial insight, and expert opinion. From the bingo sites you keep coming back to, to the chat teams that make every session more fun, this is your chance to have your…
Your chances of walking away with real cash from a casino bonus are set to improve significantly. New UK regulations are putting an end to unfairly high wagering requirements. From 19th January all casino sites must adhere to a 10x maximum wagering cap on bonus offers, following a landmark ruling by the Gambling Commission. Editor’s Note: Though your ability to convert bonus into real cash is improving, gambling is still…
Kenny Rogers was right. “If you’re gonna play the game, you gotta learn to play it right”. It’s Safer Gambling Week so we’re taking you back to school to teach you how your brain tricks you when you gamble – and what you can do to play smarter (and safer). 3. The Gambler’s fallacy Perhaps one of the best known terms in gambling. The gambler’s fallacy is the mistaken belief…
Anyone accessing gambling sites or visiting gambling venues this week will see traditional marketing taken down in favour of Safer Gambling posters, but does anyone actually notice – and more importantly does anyone actually care? conversations we are often reluctant to have From every angle I believe strongly that Safer Gambling Week is a vitally important campaign designed to raise awareness of safer gambling and to open up conversations that…
Grab your dabbers bingo fans, the WhichBingo Awards 2026 are officially on the horizon. Now in our 13th year, the WhichBingo Awards are all about recognising the sites, games, venues, and people that players love. Winners are chosen through a mix of player votes, editorial insight, and expert opinion. From the bingo sites you keep coming back to, to the chat teams that make every session more fun, this is your chance to have your…
Your chances of walking away with real cash from a casino bonus are set to improve significantly. New UK regulations are putting an end to unfairly high wagering requirements. From 19th January all casino sites must adhere to a 10x maximum wagering cap on bonus offers, following a landmark ruling by the Gambling Commission. Editor’s Note: Though your ability to convert bonus into real cash is improving, gambling is still…
Every December, game studios unwrap their festive releases. Cue games with Santa and jingling soundtracks. We’ve tested the newest and most popular Christmas slot games, checked the small print, and brought together the ones that genuinely stand out. In true WhichBingo style, here’s your honest guide to the best Christmas slot games 2025. What they do well, who they suit, and where to play them safely. The 6 Best Christmas Slot…
Kenny Rogers was right. “If you’re gonna play the game, you gotta learn to play it right”. It’s Safer Gambling Week so we’re taking you back to school to teach you how your brain tricks you when you gamble – and what you can do to play smarter (and safer). 3. The Gambler’s fallacy Perhaps one of the best known terms in gambling. The gambler’s fallacy is the mistaken belief…
Your chances of walking away with real cash from a casino bonus are set to improve significantly. New UK regulations are putting an end to unfairly high wagering requirements. From 19th January all casino sites must adhere to a 10x maximum wagering cap on bonus offers, following a landmark ruling by the Gambling Commission. Editor’s Note: Though your ability to convert bonus into real cash is improving, gambling is still…
Kenny Rogers was right. “If you’re gonna play the game, you gotta learn to play it right”. It’s Safer Gambling Week so we’re taking you back to school to teach you how your brain tricks you when you gamble – and what you can do to play smarter (and safer). 3. The Gambler’s fallacy Perhaps one of the best known terms in gambling. The gambler’s fallacy is the mistaken belief…
Anyone accessing gambling sites or visiting gambling venues this week will see traditional marketing taken down in favour of Safer Gambling posters, but does anyone actually notice – and more importantly does anyone actually care? conversations we are often reluctant to have From every angle I believe strongly that Safer Gambling Week is a vitally important campaign designed to raise awareness of safer gambling and to open up conversations that…
It may be Halloween but we’re officially saying goodbye to some financial frights in the world of gambling. A significant set of new measures are set to boost the clarity, and ease of use for gambling deposit limits. And there is proven evidence that changes like this will help. The core goal of these improvements is to increase consumer empowerment. Here is what these changes mean for your experience, starting…
UK romantics are officially ditching roses, chocolates, and teddy bears in favour of experiences and memories. According to recent survey data, a massive 70.9% of Brits now prefer a shared experience over a physical gift. But, the survey of over 500 UK residents also revealed that nearly 64% of people agree that spending money isn’t a valid measurement of love. From fancy dinners to high-energy bingo raves, the focus has…
Some nights are made for slippers and snacks. Others call for being ‘out out’ with your mates, singing along to 90s pop songs, holding an inflatable unicorn you just won in a twerk off. But on the most romantic night of the year are you in the cosy night in or the party night out camp? Here’s how your Valentine’s style shapes your bingo, casino or bingo party options. Meanwhile, In Other News:…
The time has arrived. The WhichBingo Awards 2026 voting is now open! It’s now over to you. Celebrate the very best in bingo, slots, and casino. The sites, the games, the teams, the food, the personalities… every vote makes the difference. If you missed what’s new this year, including the brand-new Pre-Show Awards, you can catch up in our What’s New for 2026 piece. For now though, the important bit…
Love Island All Stars has delivered plenty of drama. We’re talking tears in almost every episode. Plus fiery confrontations and intense online backlash playing out alongside the action in the villa. And according to former Islander Mitch Taylor, this series feels very different from anything that’s come before. Watching closely from the outside, Mitch has been sharing his unfiltered reactions as the series unfolds. From questioning who’s genuinely there to…
by
Killian Morris
5min
Updated November 6, 2024
Killian Morris
Entertainment & Social Media Specialist
“Social Sharpshooter” is a name that reflects Killian Morris’s ability to blend strategic PR, social media savvy, and a deep understanding of the iGaming landscape. With nearly a decade of experience, including roles at industry giants like Paddy Power Betfair and Gambling.com, Killian has honed his craft in building successful campaigns that connect brands with their audiences on a global scale.
3min 
Reader comments