I use Floorp, haven't tried Zen though. I remember some drama of Floorp temporarily closing it's source but I believe it's open source now. I like it for the side bar it comes with, it's pretty useful for multitasking but I guess you could just open two windows and place them side by side

I play trumpet, I'm good at it and I really like being good at it. I branch out every now and then to other instruments, none are quite as intuitive to me though.

HVAC system

Doomsday Paradise is a rogue like dating simulator, and has a nice couch co op mode