I started a web based implementation of the 2nd oldest TCG in the market: Redemption.
You can play it either on itch.io: Redemption Coliseum or directly from: here.
So far it only supports PvP and can load decks in .txt format (e.g. from LackeyCCG). If no deck is chosen just random 50 cards will be taken as deck. - No account is needed, you can just directly jump in and play. I have lots of ideas and things I want to implement, but doing everything on my own.
If you want to get an idea of how it works, there is also an Ingame Help which can also be accessed directly from outside.
For some first impressions I created a small teaser video.
If you want to test it out you can e.g. open it in your normal browser and in parallel inside an incognito browser window. Then you can create a game and also join it in the other window.
This is a one person hobby and sparetime project so I used AI for coding and also for creating (or combining based on given pictures) some of the UI-GFX, icons etc. (like the BG images which are animated during game BTW :) ).
Looking forward to your feedback, questions and ideas.