[Serpiko]

But, we, the french, we had the first Crymson's Skies like plane : http://ww2drawings.jexiste.fr/Files/2-Ai...-10C-2.htm

Cool! that plane looks like that indeed!

in this sense, at this page you can see real world planes (or projects) that inspired the fictional planes of that game, with their mixture of classic and futuristic design:

http://tekeli.li/crimsonskies/equivalency.html