I enjoyed all of the game modes and the quality of the pictures. But a 50x50 puzzle is just ridiculous and headache inducing. Keep them small and relaxing, that's what puzzles games are for.
Final Score 44/47 - Sound is great, very ominous. The graphics are too complex to be simple and cartoony, but not complex enough to be realistic. Great concept and story, I wish there was more of a reward to finishing each level. Maybe the stories of those you've saved. Or the reasons why they've turned. You could lead it up to the final boss or challenge.
Also z, x, c would have been much more comfortable than shift, alt, space.