What's that overall filter that covers the view? Is it supposed to look like a late 80s passive matrix color LCD screen?

Edit: Thanks for the downvote, guess I shouldn't have paid any attention to this post at all?

Such a beautiful technique for shoehorning straight out of the 1970s! See also

https://en.wikipedia.org/wiki/CHIP-8

and

https://en.wikipedia.org/wiki/SWEET16

It seems so un-FORTRAN that DEC had a FORTRAN compiler for the PDP-11. that was based on a stack machine and then later built an FP accelerator specialized to accelerate the stack machine. It was a straggler but I'm still trying to track down a circa 1992 article from Dr. Dobb's Journal where someone used virtual machine techniques to unbreak the broken i860 and make a good FORTRAN compiler.

The rest of the games submitted to this very interesting, somewhat niche game jam (including my own entry) are here:

https://itch.io/jam/langjamgamejam/entries

There were some really impressive submissions in spite of the short time frame!