Hey, Great Demo, I really like what you did with it. It has enough plot twists and character changes to be recognisable as something new, but retains enough of the Chrono Trigger "spirit" to feel like a new sequel.
Most of the comments I wanted to make have already be said, so I'll just try to cover anything I noticed that hasn't come up yet.
First off, I noticed a bit of a problem reguarding the save points. (Yes, I used save points instead of save states. Sue me, I'm old fashioned.
) When I attempted to walk over one and open the menu to use a shelter and save, I found that I could do neither. The menu acted as though I was nowhere near a save point. I could save at one if I went up to it and pushed A to open the quick save menu, and I could save and use shelters on the over world.
Second was during the "After the end" portion of the demo. I went in using a party of Crono, Marle, and Magus. When we confronted "Zeal" at the end of it, the dialoge seemed to imply that
only Magus would remain for the fight, while the others would flee. However, when the fight began,
both Marle and Magus were in my party, and remained there until the escape scenario completed.
The third comment is that during the escape, I was also unable to open my menu.
The fouth comment is in reguards to the writing. I thought that during the scene where Marle spoke to General Montcrief that she came off a little too ditzy. Marle has always been naive and over enthusiastic, but I hardly think that she would forget the Dragon Tank after she saw it outside. She also seemed to be too easily apeased by Montcrief's not very convicing answers. I also think that General Montcrief came across as too ill prepared. I could see him being surprized by the question about Fiona's forest, but he should have known that they would ask questions about the botched assasination. Overall, the scene just came across as a very unconvicing scene in the midst of some rather solid (though rushed) writing.
The final comment is more of a suggestion, but I felt that Atropos' fight with the monster attacking Melchoir was a little too anti-climatic. Chrono Trigger has never made technoloy seem weaker than magic (while the vast majority of your party members use magic, Robo is roughly as powerful as they are.) Therefore, it seems odd that Atropos (who was a match for Robo during the Geno Dome quest) is one-hit-KOed, while your party is able to wipe the floor with the other invading creatures.
Overall, though, an excellent demo, and a promising look at things yet to come.