Dead? The schedule page [1] has recent and upcoming instances scheduled, at least:

    Ludum Dare 54 — September 29th - October 2nd, 2023
    Ludum Dare 55 — April 12th - 14th, 2024
    Ludum Dare 56 — October 4th - 7th, 2024

I never tried it, I don't have a quickly accessible game programming framework. Nor the time, heh.

[1]: https://ludumdare.com/#schedule