Hi to another French dev!
The jar is working on Linux, as I would expect. Although I don’t have a working password so I can’t really test the game’s features, but the app is running correctly at least.
java -jar flop_util.jar
Your description n itch.io mentions “Flop_util.js” instead of “.jar”, by the way.
I tend to like meta-games, but I admit on this one I’m a bit lost. There seem to be a catch on #01, but I don’t feel like I’m missing anything (as in investigation games where you know you didn’t use that specific clue yet). And because locks are sequential, I cannot start working on #02 or #04 in parallel while I’m thinking more about #01. I’ll try to spend more time on it.