Well, There are a whole bunch of ways to manipulate the demons, including fusing them to make new ones, sacrificing them to get an items, etc. To convince a demon to join, it can involve from sweet talk to bribery, to threats. These same options can also result in getting the demon angrier, make them runaway, or them giving you money and items.
Edit: Also, it is a RPG, not an ACT game.
I am a PC gamer, and also have a NDS now, but without access to a Nintendo Wii until End of 2007.
Currently playing: Super Smash Brothers Brawl(Wii), Mystery Dungeon: Shiren the Wanderer(DS), Dragon Quest Heroes: Rocket Slime (DS), WiiFit(Wii)
Games Recently Beaten: Final Fantasy Crystal Chronicles: My Life as a King (Normal; Very Hard after the next DLCs become available)
1 word: RTFA
