GIF selector:
Welcome!
You have visited the official page of UNDEFINED — a festival of programming, demoscene, homemade electronics, retro computers and everything else, which takes place approximately twice a year in the suburbs of St. Petersburg, Russia.
The festival is sheduled at August 16, 2025.
Location - Russia, Leningrad region, Roshchino village, Pesochnaya street, building 1, Raivola country hotel (hall on the ground floor of the mixed-use complex).
[Show on map] [Hotel website]
Price: arbitrary donation
Please, use our chat room to receive updates on shedule and video streaming.
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Telegram channel]
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Telegram chatroom]
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Web IRC chat (join #undefined)]
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Matrix: #undefined:hackint.org]
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Peer-tube videos (on maintenance)]
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Habrahabr articles]
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GPG key]
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BBS (on maintenance)]
Use theese credentials to donate arbitrary amount of money to the festival admins:
You can upload a prod to the UNDEFINED computer arts competition 2025 using the upload system at [events.retroscene.org] for the following nominations:
Also there are realtime competitions during the event:
Rules are to be found at [events.retroscene.org]. Realtime competition rules are negotiated. Anyway, when in doubt, contact admins of Undefined festival using our [chat room].
Deadline for uploading prods: 2025.08.16 16:00 (gmt+3)
Remote compo participation is free of charge.
Previous competitions: [demozoo] [retroscene.org]
Webpage history:
[2022 winter] [2022 summer] [2023 winter] [2023 summer] [2024 winter] [2024 summer] [2025 winter]
