The beta version of Terranigma is now preserved in the Unseen64 archive
 
Terranigma AKA Tenchi Sōzō in Japan, is an action RPG developed by Quintet and published by Enix / Nintendo for the Super Nintendoin 1995 / 1996.  A few beta differences from this cult SNES RPG were found in old gaming magazines and video previews, check them all in the Unseen64 archive: http://www.unseen64.net/2015/07/27/terranigma-beta-snes/