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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.


[ Back to russian page ]

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.

[ Telegram channel]
[ Telegram chatroom]
[ Web IRC chat (join #undefined)]
[ Matrix: #undefined:hackint.org]
[ Peer-tube videos (on maintenance)]
[ Habrahabr articles]
[ GPG key]
[ BBS (on maintenance)]


Photos[#]


Donations[#]

Use theese credentials to donate arbitrary amount of money to the festival admins:

Sberbank, Tinkoff: +79161618822 - Никита Вячеславович А.
[bc1qpmy7mqp8366puuh340vvdckek56sn9k26hv0rl]

Shedule[#]

August 16.:

(timezone gmt +3)

starting from 10:00 am - build up
15:00 lectures
16:00 - deadline for all remote competitions
17:00 - dj Zenit, Pasha & Sviat Weiler, music pause
18:30 - demoscene showdown
19:00 - Music Bottle
20:00 - technological break
22:00 - realtime coding Nyukomatic

During the entire event:

- Retrogames.
- Buchaos Constructions (for a fee)
- Exhibition of DIY electronics
- Toy Railroad (with working semaphores)
- If you want to stay at night, there are options


Competitions[#]

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]


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