How to play “Where’s Lopy?”
- Zoom in on the 1000 × 1000 pixel grid (scroll wheel, pinch or the + button).
- Click a pixel that is still black to see whether Lopy is hiding behind it. Grey pixels have already been searched by other players.
- You get 100 tries per day. Use them wisely, or let luck decide with the “Feeling lucky” button.
- If you find Lopy, you get a winning code. Send it to hello@lopy.fun and a lollipop heads to your mailbox.
How small is a one-in-a-million chance?
On your first click, you have exactly a 1 in 1,000,000 chance of hitting the right pixel. That’s small… but it is about 290 times better than winning the US Powerball jackpot (1 in 292,201,338), and 140 times better than the EuroMillions jackpot (1 in 139,838,160).
Even better, your odds improve with every pixel anyone tests. Once half the grid has been searched, each click has a 1 in 500,000 chance. When only 1,000 black pixels remain, it will be 1 in 1,000. The “Your odds” counter at the top of the game updates live.
A live, collective treasure hunt
This isn’t a lottery where everyone plays alone: it’s the whole internet versus Lopy. Every tested pixel turns grey for everyone, and the pixels flashing pink are ones other players just tested, right now, somewhere in the world. Together, we sweep the grid until someone finally finds it.
How long will it take to find Lopy?
On average, half the grid needs to be searched — about 500,000 pixels. With 1,000 players using their 100 daily tries, that would take around five days. With 10,000 players, a single day. With three motivated friends… more than four years. The more players, the faster it goes: share the game!
Why nobody can cheat (not even us)
Lopy’s position is picked at random by our server at the start of each season. It is never sent to your browser: there is no point digging through the page’s code, because every click is checked on the server.
To prove we never move Lopy mid-game, we publish a cryptographic fingerprint (SHA-256) of its position combined with a secret code from day one. Here is the current season’s fingerprint:
…
When Lopy is found, we reveal the position and the secret code. Anyone can then recompute the fingerprint and check that it matches. Had we moved Lopy, the fingerprint would be completely different.
Frequently asked questions
Is the game really free?
Yes, completely. No sign-up, no purchase, no email required. Open the page and play.
How many tries do I get per day?
100 tries per player per day, reloaded every night at midnight (UTC). Testing a pixel that is already grey costs nothing.
What do you win?
A lollipop. A real one, mailed to the first player who finds Lopy. Yes, that’s it. And it’s glorious.
Can I play on my phone?
Yes. Pinch to zoom, drag to move and tap a pixel to test it. The “Feeling lucky” button picks a still-black pixel for you.
What happens when Lopy is found?
The season ends, the position is revealed along with its proof, and a new season starts with a new hiding spot.
Can you cheat?
The position is checked only on our server: it is never sent to your browser. Bots and scripts are rate-limited and banned by the rules.
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