1 day gone and I have nothing

I'm thinking I might have to cut this jam short I've had about 3 ideas so far for the theme, worked on one got a decent chunk done but then got blocked because I don't know how to proceed forward anymore, gameplay mechanics have always been my go to for the jams but every idea I've had I don't know how to make the gameplay work so its started to overwhelm me a lot this theme wasn't the greatest for me but I know it has room to have really creative games made from it but everything I've come up with has failed and now I have no idea what game to make and with only 2 days remaining I'm not sure if I want to continue since I'll have to start from scratch again