Thanks for your input, sorry if the instructions weren't quite as clear as I imagined. I'll see if I can maybe clear things up with a quick video tutorial.
piszozo, in the Future game, turning is affected by your speed and it can help to slow down prior to tight turns. I often speed up right as I'm about to get a "nibble" then target the next one.
Robsta, 50ish? My own highest streak was 40 and I thought that was good. I'll have to push and see if I can get to 50! As for speed, the Classic game has just a single speed just like the retro Snake and Nibbles games. The Future game uses the Up and Down keys to speed up and slow down (I'm sure you know that now, just clarifying for others).