Hey Flyby. I used the engine Stencyl for several years before switching to Unreal Engine. I HIGHLY recommend it. It's built on scratch so it uses the same code block drag and drop system... but it's a full 2d game engine and is really freaking awesome. Check it out! http://www.stencyl.com/ - If you know Scratch I bet you'd pick it up fast. Maybe use the jam as a way to learn it?