Make sure to check out Yucata.de too. They have about 200 games with some overlaps with BGA. The site UI takes some getting used to and matchmaking is not as well featured as BGA's but the in-game UI is actually very nice once you grok it and it has an excellent undo/replay/log system.
Love the concept; are they open source? Would love to get gaming further away from the big companies. If it's "free" now, how are users paying for it, with data? Ads? We've seen a well documented history of enshittification so before I dump time into a platform that's my 1a question.
I want to use this, but I don't want to play without my wife and you need to pay to play with someone who has the same IP address as you. No way I'm paying them just to try it out. I get why they do it, but it's complete and utter BS from my perspective since I want to play these games to try them out before buying.
Hm, yeah I can't think of any from the top of my head. I guess the site's format works best for euros and the audience seems to be geared towards that too.