Comment 2 for bug 528690

Making it the following, but subject to change:

Current Scoring system is: BaseScore * Modifier, where Modifier is based on death history and BaseScore is how long it took you to save the Frog.

Updated thinking, could be a long the lines of:

(BaseScore + (Level *3)) * Modifier.

Notice how, there is no Level at all mentioned in normal scoring system, this is so that the difference between Hard Mode and Normal mode is not too great at lower levels but as you increase in difficulty, then Hard Mode becomes more rewarding, and rightly so - due the lack of lives returned.

Differences in Scores as you progress up levels:
Level 1: +3
Level 2: +6
Level 3: +9
Level 4: +12
Level 5: +15
Level 6: +18
Level 7: +21
Level 8: +24
Level 9: +27
Level 10: +30.

With 4 Frogs per Level the difference can wrack up:
Level 1: +12
Level 2: +24
Level 3: +36
Level 4: +48
Level 5: +60
Level 6: +72
Level 7: +84
Level 8: +96
Level 9: +108
Level 10: +130
(Assuming successful return of all frogs).

This is just a rough plan, stuff might change, probably to make Hard Mode much more rewarding.