The Brainy Gamer: "Crayon Physics Deluxe designer Petri Purho cites the classic children's book, Harold and the Purple Crayon, as an inspiration for his wonderful new game. It's a nice homage, and the connections between the two are easily seen. But as Purho freely admits, he hadn't read Harold while working on the game; "but I knew the plot and the magic crayon."
The real inspirations for CPD suggest a fascinating design-influence circle that accounts for why, to me at least, CPD functions as a perfect companion to one of my favorite games of last year: World of Goo. Sure, both are physics-based games, but so was Spacewar! back in 1962. It's possible to find more precise and more interesting connections."
