WASD to move Arrows to turn the camera. The 3d effect comes from a simple "y position" equation. Trust me, I've made way better 3d projects, this is just a proof of concept. Maybe good for easy Mario games.
Upsides? Extra walls and floors with almost no tax on the scratch engine. Downsides? semi-Top-down view only. It's a top-down that I incorporated a 3d effect into. simple and perfect for beginners to understand. This project is just a thingy I cooked up in 2 evenings. It's actually extremely simple, like simpler than simple.