I love the CRT shader, gave off big lost-game/found VHS tapes vibes. I didn't initially understand why going back on yourself meant death, reading the long snake information cleared that up immediately though!
I never thought of the OG snake being his own worse enemy, need to go dig out my Nokia and beat Snake so he can live a happy life haha!
Would have loved an 'instant reset' button for when you knew you'd lost the puzzle, but didn't want to wait for death to reset me.