Very different from the first two Dark Fall games, with new interface and new scare tactics.
Comparing Lost Souls to The Journal, the story seems a lot shorter but maybe because there is a lot less reading to do in Lost Souls. The new story doesn't reference The Journal much except for a few characters but besides that, the story is unique. While The Journal had a more creepy atmosphere, disturbing, thinking kind of scare tactics to it, Lost Souls counts on some "shock" and its visuals to terrify you. It's not exactly my thing, but some will like playing in the dark with the sound blasting!
Overall, I recommend this game for anyone looking for a good point and click, horror game, as long as it's still under $20.