For linux users: The game depends on two libraries installed on the system (libssl.so.1.0.0 and libcrypto.so.1.0.0). Most systems might have newer versions installed (on my Ubuntu20.04LTS its libcrypto.so.1.1 and libssl.so.1.1).
Solution: fire up a terminal and search where the libraries are installed on your system:
sudo find / -name librypto.so.*
(enter the password for your user, when asked)
change directory to that folder. For ubuntu20:
cd /usr/lib/x86_64-linux-gnu
there, create two symbolic links which point to the new libraries but have the name of the old:
sudo ln -s libcrypto.so.1.1 libcrypto.so.1.0.0
sudo ln -s libssl.so.1.1 libssl.so.1.0.0
Now, the game does see the new libraries and starts without problems (at least for me)