As far as we can tell, this is a card game based on the anime series and other games... but we're not positive. On the back of the box, it shows a bunch of the other Saturn games, like you're 'digitally' collecting them? Maybe a digital video game collection that you can't really play?
NOTE: All photos depict good condition items only; actual product may vary.
Used Neon Genesis Evangelion: Digital Card Library (good case, good instructions, poor spinecard)
Used Neon Genesis Evangelion: Digital Card Library (good case, good instructions)