Incorrectly predicting the theme
I've added up final round theme votes from 56 screenshots posted on the ldjam.com site, the #LDJAM twitter hashtag, and the unofficial Ludum Dare discord. Here are the results:
Dreams - 5
Power source -11
Non-violent - 8
Abandoned -10
1 minute -13
Decay - 8
Side effects - 2
Fragile -14
Outdated tech -17
Ruins -17
Momentum -20
Automation - 5
Keep it alive 5
Garden - 2
Connections 1
Please be advised, I don't claim that this has any real predictive power whatsoever. The small sample size and likely sampling bias are huge methodological flaws. Consider this list as just a curiosity.