Unlock Infinite Nerd Drop at the bonus menu. It is second on the left. The goal is to get 250,000 experience points (level 50) by bouncing off the pegs. One bounce is worth 5 experience points. Bouncing off a peg multiple times is worth much more. You will earn 25 experience points for the second bounce, 40 for the third bounce, then 80, 125, 180, 240, and 320 for subsequent bounces. Those are additive; getting three bounces from the same peg is the same as fourteen regular bounces. After extended contact or getting 320 experience points from a piece, it will disappear. The game cannot be saved or allowed to idle in the background (or it will pause without focus). You can allow the game to idle in the foreground until earning 250,000 experience points. You can gain experience if you are close by bouncing repeatedly straight up off a single peg, or bouncing between multiple pegs. At an average of five bounces per peg, this results in 400 experience points per peg or about 50,000 experience points in up to an hour.