It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera


with MacOS 10.15 (Catalina) only 64bit processes are allowed to run.

AFAIK FTL is still 32bit.

Are there any plans to release a new compiled 64bit version for Catalina?
Ask the developers! The game is a bit old now so doubtful but some developers have re-compiled even older games with 64bits.

Are Apple blocking you from installing Linux next to MacOS? Otherwise you could install a Linux distro with multi-arch ( = supports both 64 and 32 bits) next to it for games.