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Games
Games built on open knowledge — Wikipedia, public data, free APIs. 11 games live on factorday.com.
Wikipedia Games (8)
WikiTrendle
A daily Wikipedia word game. Guess words connected to a trending Wikipedia topic. 50,000+ players worldwide.
WikiFamous
Two Wikipedia articles — which one has more views? Popularity is harder to predict than you think.
WikiLength
Two Wikipedia articles — which one is longer? A surprisingly hard game about the depth of human documentation.
WikiLang
Two Wikipedia articles — which one has been translated into more languages? A window into what the world considers worth knowing.
WikiWalk
Walk through as many Wikipedia articles as possible linked to a city. How far can you roam before the trail runs cold?
WikiFreq
Guess how frequently words appear across Wikipedia. A game about what the world talks about most.
WikiOdd
Which one doesn't belong? Four Wikipedia topics — find the odd one out. Pattern recognition meets encyclopedic breadth.
WikiJumble
Unscramble words pulled from Wikipedia articles. Fast, satisfying, and endlessly varied.
Other Games (3)
Rare
A species appears. Is it threatened, endangered, vulnerable, or least concern? A game about what we are losing and what remains.
Damsel
The endless runner — but the obstacles are real NASA events. Dodge solar flares, asteroid flybys, and cosmic phenomena on your way through space.
Crossword
Daily mini crosswords. Small grids, sharp clues, done in minutes.