Ask HN: Is my iOS game too hard? (includes leaderboard data)

My first game, Frog Trip, went live on the App Store yesterday. It's in the top charts for the Arcade & Action categories, but I'm worried that it's too hard.

Here's the Game Center leaderboard data:

1130 Total Players

# OF POINTS ~ # OF PLAYERS

20 ~ 13 (1.15%)

10 ~ 44 (3.89%)

10 ~ 22 (1.95%)

9 ~ 23 (2.04%)

8 ~ 22 (1.95%)

7 ~ 36 (3.19%)

6 ~ 32 (2.83%)

5 ~ 47 (4.16%)

4 ~ 77 (6.81%)

3 ~ 114 (10.09%)

2 ~ 180 (15.93%)

1 ~ 520 (46.02%)

This data, of course, excludes the poor souls who couldn't score 1 point, or simply didn't bother. I don't have those numbers, but for perspective, the game received 2.08K downloads yesterday.

My goal was to create an exceptionally challenging game, but based on your feedback, I'm open to lowering the difficulty.

(By the way, the game is free and has no ads, so if you have an iPhone, might as well try it out. It'd be great to get feedback on the experience.)