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Read the full Creator’s prompt
Build a free daily browser game called guessNow: each day it serves the same five real historical photographs (from Wikimedia Commons, public-domain/CC licensed) drawn from a curated archive, and the player slides a slider to guess the year each photo was taken. Scoring is closeness-based (up to 1000 per round, 5000 total), the daily set is identical for every player and resets at midnight UTC, and every reveal shows the photographer, licence and source so the game doubles as a provenance-checking habit. Server-rendered so each daily page is crawlable; holds back the current day's photos. No login, no account, no ads.
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AI tool / model: Claude, as the creator submitted it.
At a glance
What was guessNow made with?
The engine guessNow was made with is not stated in the source. The creator says it was made with Claude, in the prompt they shared with Vibe1Up.
Does guessNow work on phones?
Probably not well. We could not confirm touch controls, so a keyboard or mouse may be needed.
Is guessNow multiplayer?
Not stated in the source.
Where can I play guessNow?
In your web browser on guessnow.fun, linked from its listing. Vibe1Up links to it and doesn't host the game.
Is the prompt for guessNow official?
Yes. The prompt on this page is the Creator's prompt: guessNow's creator, @guessnow, shared it with Vibe1Up on Nov 4, 2026, and we confirmed they made the game before showing it.
