Every July and December we hold official Decker-themed game jams here on itch.io:
(Maybe we could even do these more often if there's enough interest?)
The next scheduled Jam will be Dec(k) Month The Second, December 2024; I'll update this post with the link when it's ready.
If you're participating in or hosting another jam where Decker might be a good fit, feel free to drop a link in this thread to let us know. Remember to tag your creations with #decker so your fellow deckbuilders can find them!