Well I've participated but wasn't able to finish. The difficult part was the jam for me because I was still new to game development at the time. So hopefully this jam i can change things but we don't have a theme so...
Not long. I've really gotten back into it recently so around 2 months but I first started making games was around 2 years ago where I was just dabbling in game developement.
The most difficult thing for me is the programming area, I love everything, but I'm still new to programming in my favorite game engine and sometimes something as simple as making a bot that follows you can take a lot of time for me.
yup, also there is another youtuber that will make a jam soon called the wowie game jam, the fun fact here is that the themes are weird like a intencional bug on the game or something like it