A good game, but less popular: 2025 Ex Machina
Of course, for the sake of the cause, it’s always good to show your audience (or your fellow librarians) that “exploring online games” wants mostly also say “discover educational / serious games”.
On the other hand, serious games make sense when they are connected to school or extracurricular activities. Apart from these activities, young people seldom choose serious games when they have a choice. And when they venture there, it’s not flattering for these games.
If I had to do it again … I would remove the majority of serious games from my selection. On the other hand, I would perhaps motivate young people to try a serious game in the range of games offered to earn points in the tournament.