Somewhere in the depths I've got a version of this I customised ... up to 4 players, powerups, cheats and about 20 levels..

[and probably loads of bugs]

That's pretty awesome. I wrote a SCREEN 13 graphical version from scratch. IIRC, the snake sprites were gradient blocks that were procedurally generated, and then used GET and PUT to pick and place them.

Wish I still had a copy of that stuff that I could put on Github!