so its not kingdom hearts 1 and 2? What's the chronoloigcal order of the games on 1.5? The story all connects one after another? I never played the kh series so do I need to play 1&2 for this?
Kingdom Hearts: Birth by Sleep (Playstation Portable) comes first in the timelines, excluding portions of its secret ending, Blank Points.
Kingdom Hearts (Playstation 2) aka KH1.
Kingdom Hearts 358/2 Days (Nintendo DS, pronounced "three-five-eight days over two"). Days 1-24 take place at the same time as the finale of Kingdom Hearts.
Kingdom Hearts: Chain of Memories (Game Boy Advance) aka KH:CoM. Since been rereleased as Kingdom Hearts Re:Chain of Memories for PS2.
Days 25-27 of KH:358/2 take place at the same time as Chain of Memories.
While not a separate game, days 28-358 of KH:358/2 take place here in the timeline
Kingdom Hearts II (PS2) aka KH2.
Kingdom Hearts coded. Takes place between the ending of KH2 and KH2's epilogue. This was released as a mobile phone puzzle game in Japan only. It's since been rereleased as for the NA and EU territories as Kingdom Hearts Re:coded on Nintendo DS.
Blank Points. This is Birth By Sleep's secret ending. It goes from the end of BBS to some time after Signs of What's Next, the secret ending of Kingdom Hearts Re:coded. The secret ending apparently has spoilers for Birth by Sleep, which is why the final episode for Re:coded wasn't released until after Birth by Sleep.
Kingdom Hearts 3D: Dream Drop Distance (Nintendo 3DS) It's set after the events of Kingdom Hearts Re:coded.
Kingdom Hearts III (slated for Playstation 3). Does not exist yet. Development is TBA. We may end up with more games in between before we get to this one.