Just watched some of the stream, Amazing play Dave you definitely have to warm up through this game. I find it quite stressful to play, maybe I need to work on my relaxation techniques in order to get better.
You definitely need to keep calm playing this game.
The game is all about exploiting the way nibbler turns automatically on corners. Finding the best flowing patterns is key to minimising the amount of input required - some maze patterns are more obvious than others. Watched back a few snippets of my play yesterday and realised how I could optimise my route through some of the mazes. Less time on a maze = more points and faster progression through the levels.