It means you can make your game with C# in the way you make game in LÖVE .
just install an Nuget package and you can run it on windows/debain8+(ubuntu 14+)/macos 8+
Check out it on Github.
I always forget what I did in lua code, so ...
However, truth be told, it means your lost support from so much libraries already exist in LÖVE as well.
------- update 2019.04.12 -------
physics module support already added. (finally..., get rid of something <_< )
------- update 2019.12.26 -------
now, you can run it on macOS 7+