I recently bought a Yoshi's Cookie Prototype dated 1/19/93 on SNES and I successfully dump the game and want to share the ROM with everyone here, so if you want to try the prototype you can download it on my website, I have also make an article about it (in french, sorry) if you don't understand french you can always look at the pictures comparaison, the ROM is at the end of the article, so yeah have fun with it !

http://www.legrospixel.com/yoshi_cookie_prototype.html




I paid 150$ for the prototype.