A simple test of texture in this 3D Maze. You're trying to get to the center, which is a large open space. WASD to move and turn. Space Key to Jump. Arrow keys to look around and turn. Double Click the Green Flag Turbo Mode recommended
I created the engine to look up and down and jump, but the rest of it is thanks to the Scratch Wiki, @PutneyCat, and some advice I found in the forums, which helped put a sprite behind the pen (using stamp). A Sprite-Based Raycaster