adaliabooks: Hmmmm... honestly not sure whether this breaks GDPR or not.
https://redshell.io/gamers They don't take personal info, just computer fingerprint stuff (which I'm not sure is covered).
"Personal data" is not just your name or ID number. E.g. IP address is also considered as personal data by GDPR, as far as I recall. Same for device finger printing, especially considering that nowadays many devices connected to the internet are quite personal. Think of your phone for example, and most likely you are also the only user of e.g. your laptop.
Pseudonymized data (data that doesn't directly reveal who you are, but can reveal it with additional information from somewhere else) is also considered as personal data. I presume that is why even dynamic IP addresses are considered as personal data: if I knew your current dynamic IP address, I wouldn't be able to outright say who you are, BUT if I somehow got that information from your ISP (ie, who was using that IP address at this exact time), then I would. Hence, it is personal data.
Also if I recall right, a name alone might not either be considered as personal data, if it is a very common name with no extra information. So, "John Smith" is not necessarily considered as personal data, but "John Smith who works at the company Tellus Labs" might well be.