EG24 remains as described in my previous post. Although the game makers posted have finally moved to either Unity or HTML5, the challenges have remained at a mediocre level. It appears that all the games are posted by the game-makers. There are no longer any Asian or (as far as I can tell) non-US games, almost all are cartoons. There are several "plug-in" puzzles (jigsaw, 4x4 sliders, push the lock onto the key) that replace more traditional escape puzzles.
In desparation, I pulled up the "Japanese games" category an started searching for home pages. Sure enough, games are still being created! I started off looking for Find the Escape-Men games from No1Game. Go to https: //www.no1game.net or 脱出ゲーム大百科 || 脱出ゲームの攻略と紹介 (no1game.net)
It turns out that No. 1 Games is its own gamesite publishing other gamemakers, including tomoLaSiDo, Gotmail and Mateusz Skutnik! A MUST PLAY is Where is 2021? by Mateusz Skutnik (itch.io), a series he does every year. This one has a different interface.
My current favorite is Rinnogogo https://rinnogog.com/index.html or rinの午後 (rinnogogo.com). VERY, VERY challenging games -- I almost always end up hunting out a video walkthrough to find a missed hot-spot or way of interpreting the clues. The games auto-save, so you can safely pause play if you're more stubborn and less impatient than me.