Arrow keys & space to move. Drag the circles to change the perspective, and double click the background to change the step size. I may make a game with this, but I'll wait and see. (No, the square is not changing size or shape. It's just how wonky 3-point perspective is! Either that or I did my math wrong, that too)
Whoever invented 3-point perspective. Google says renaissance architect Filippo Brunelleschi, so credit to him!
