A 20 second game is the target of the jam and we’re really pushing the message that is the expectation.
That said we’re only disqualifying games that fail to engage with the concept of 20 seconds in any identifiable way whatsoever (really low bar but surprisingly many have failed to clear it).
So you’re clear to explore your idea if that’s what you want to do, free from concern about the game getting pulled. I’d just encourage exploring ways to make your concept align more closely. We can offer suggestions on how to do that if you like, here or on the Discord.