In technical categories, the differences between the PlayStation and Sega Saturn versions are as follows. The Saturn version has better quality music thanks to PCM encoding. On the other hand, the PlayStation versions use sequenced audio similar to the MIDI format. All sprite transparencies in the Saturn version, including the dialogue and menu boxes, are replaced with either solid colors or dithering effects. The full-motion video cutscenes in the Saturn version use the Saturn's standard Cinepak software compression method, which, in spite of unusually clean encoding in this case, still tends to display more compression artifacts than seen in the PlayStation versions. As the PlayStation versions use a higher-fidelity M-JPEG compression for the cutscenes, the game was extended onto a third disc for the Japanese and English PlayStation releases.
The PlayStation versions include a variety of features that were added after the Saturn version was released. The PlayStation versions feature one more cutscene than the Saturn version does. In the Saturn version, the first ending was simply still screens, while it is fully animated on the PlayStation versions. A number of bromides were added, and all bromides display at a higher resolution than in the Saturn version. The Saturn version contains two new dungeons, while the PlayStation version adds an additional two, with a host of extra monsters and items to attend them.
The packaging for the Playstation game contained poster of the cover art on one side, and a map on the other, along with a hardcover instruction booklet, paper standee's of the characters, and a large replica of Lucia's pendant. Many game-stores had promotional Ghaleon punching puppets for pre-orders.
Source: Wikipedia, "Lunar 2: Eternal Blue Complete", available under the CC-BY-SA License.