Pong Kombat is out there https://archive.org/details/PONGKOMB

No, sadly it is lost to the sands of time. I lost the source code and unaware of any copies floating around. It was still unfinished and rather buggy.

The one posted below is a coincidence. I wasn’t aware there was one based on MK 1. Mine was based on MK 2.

There’s always “Noggin Knockers 2”