Jeff Minter never ported his game Matrix to the Nintendo Entertainment system. So I did. Maybe I don't know what I'm doing.
You can play it online here.
On Ubuntu you can install FCEUX, the NES emulator, as follows:
sudo apt install fceux
Once you have that installed, you can download the game and play it:
fceux matrix.nes
On FCEUX, you can use F to fire and the Arrow keys to move.
On Ubuntu you can install the build dependencies as follows:
sudo apt install cc65 fceux python3
Then you can compile and run:
$ makeMade out of curiosity as part of the Matrix project. This example project was a big help in getting started. Let's face it: it's slow. I'm still thinking of what I can do about that.