Not unlike the reimagining of the TurboGrafx-16 original Akumajou Dracula X: Chi no Rondo that became Castlevania: Dracula X on the Super Nintendo Entertainment System, extensive edits were made to Valis IV when it was ported to the Super Nintendo. The playable characters from the original (Asfar, Amu, and Rena) were left to just one (Rena). Also removed were the animated sequences from the original version. However, a new level (Castle Vanity) was designed for this version, though several other levels were removed.

Source: Wikipedia, "Valis IV", available under the CC-BY-SA License.