My wife made up some sprites for the collaboration.
Each of these tiles is 25x25 pixels. The 1986 version of blockade was 40 blocks wide x 25 blocks tall. So we should be able to fit the full grid nicely on a laptop screen with a little slop for a title or UI elements. (Nothing saying we cannot try a different sized map though.)
If there are any critiques, we will try to fix them tomorrow afternoon and then post the sprite pack. That way they will be available first thing on Saturday even if I sleep in a little. :) If RB has the repo/skeleton project built on Friday, I'll stuff them in the content, otherwise I can try to send them as a zip file in the Discord forum and hope for the best.
We plan to post the snakes as white images with gray accents. This way you could dynamically change the snake colors in MonoGame. If people prefer keeping it simple and prefer these player colors, we can just post the colored snake body versions.
Each player snake has a different design. In theory someone who was partly/fully color blind could play. No real testing to determine if this statement is actually true though.