Verloren starts around 22 minutes-ish. https://www.twitch.tv/videos/1920629393
I was really confused by the start of the game. I thought I was Helen. Then I thought I was the Captain. Then it turned out I wasn't either of those. The way it is presented makes the jump to you playing as the kid, Sriracha was her name, somewhat jarring. I almost wonder if it'd make more sense to not know there was a baby stolen. It's just strange playing as a character that doesn't know as much about their story arc as we do.
The school is really, really big. I like that we have the teleportation system to get around, but some of the rooms don't necessarily have a distinct enough feeling to set them apart from other rooms. I think for the gym it might make more sense if we started closer to it? Teleporting into the Gym room but not seeing a gym was slightly confusing.
I did not go into the bathroom, but I was certainly tempted to choose that room since it was the first thing I saw.
Combat was entertaining, and having the ability to increase/decrease the random encounters is fantastic. I felt the tutorials for combat were well explained, and I don't think I was ever lost in it.
The writing is well done, and I liked the banter that occurred between all of the students. I also think adding in the sparkles to help point out the items you can take or interact with is a very helpful idea.
I don't know much about card games or gambling so I can't speak on how authentic those were, but from what I could tell the slot machine and Blackjack seemed to be pretty legit.
I've played a fair amount of RPG Maker games, so graphically it looks similar. I do think you've done a good job in placing items and decorations around the area to help it look lived in and not cluttered.
