Rough World (AKA Journey to Silius AKA Terminator AKA RAF World AKA [rʌf] World) doesn't look too different from the final release in these pics. Perhaps a colour changed here or there. The interesting thing about these pictures is that the hero's image is the same as the US release, not the Japanese release, where the hero wears a helmet and is less cute.
Here's a strange unreleased RPG/Platformer named "DaiMaOu Zark Densetsu", I think. It seems to be related to the other unreleased RPG named Off Zarken.