I never used Bitsy so I thought it was really cool. Now that i worked it, it's very limiting. But that made my scope of my game really small. which is something I usually have trouble with, so that's a big plus. I would recommend it to someone new to game development. but would say use it for only a week or so. It was kind of annoying to draw only in 8x8, but i do understand why. so I pushed on, working on it. something I really enjoyed was the music section. overall I liked it, but won't use it again. Also i didn't know there was a 3D version of it.
Thank you for hosting the game jam. :D