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Every Saturday at 20:00 UTC
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Next jam:

Next week is the 200th One Hour Game Jam! Woo! Aaaand it clashes with Alakajam! So participate in whichever jam you wish, One Hour Game Jam will still be here the weekend after Alakajam after all :D
rostom
shop by rostom shop
for 1 Hour Game Jam 106 (Shop)

a shop simulator

One Hour Game Jam is open-source, Get One Hour Game Jam software on GitHub.
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Established 2015