there is indeed a web version like others mentions, I also provided a prebuild binaries for lots of os/arch at https://solcloud.itch.io/counter-strike-football (and anybody can open PR for more), for hosted webpage demo I can for sure hosted somewhere on public internet as can anybody else, so I will leave that as a optional exercise for a reader to host community server :)

I think most users will build from source or use provided pre-build binaries