It gets very fast, but beyond a certain level it remains at the same speed.
Here's a few suggestions from someone who used to get almost 100,000,000 points. I got tired and stopped playing. What a choker.

- Come up with a usable pattern for each level and master it. There are many ways to skin a cat. There is no specific pattern.
- Always use flat sections of the maze as a pause point.
- When you go into a corner that could possibly cause your snake to wrap around , make sure you hold the joystick in the direction of exit as soon as this roundabout is entered.
I knew a guy who tried to go for the record once when it was at I believe 800,000,000 and passed out due to fatigue before he could reach it. I think he got around 700,000,000.
I just checked and the record stands at 1,000,042,270 points. Had to have taken over 2 days to do this. Crazy.