Full install basically makes it so that the entire disc (movies and all) are on your hard drive. I've never done it that way (multiplayer is all I use it for) but if you are one of those people that just has to see the movies, go for it. But if you are trying to conserve space Multiplayer install is really the thing you want. It will give you the option to put in the disc to watch the movies when the time comes, and give you the option to hit "cancel" and just skip the movie.

Cool. I'm actually very interested in this game now. I've had the urge to play a solid Action RPG on my DS for a while now (though I read about Lunar Knights so I'll probably be picking that one up soon). It's unfortunate that Soma Bringer isn't slated for a US release yet, but I think this has a pretty good chance of being localized.

By the way, how text-heavy/story-driven is Soma Bringer? Diablo II had very little narrative and almost complete focus on combat, but Monolith Soft's past games have been very story-driven, so I don't know what to expect.

Keep up the impressions! It's even better to hear impressions about games that get very little media coverage, like this one. Until now I knew nothing about this game other than its developer.