Non-free anti-cheat libraries
As the good guys at BZFlag IRC channel warned, some games apparently have anti-cheat methods built in as non-free libraries. This is a rather peculiar issue considering the purpose of anti-cheat mechanisms, to prevent cheating, which is why there is some sense in hiding the source code of such mechanisms.
So are we to blanket accept such things in our games for this tourney? What do you think?
I'm not sure yet which games exactly have this, but it doesn't seem to be talked about a lot, which is why I initially missed out on this issue. I suppose most people do take this for granted as a non-issue.
Anyway, thanks for your feedback!