v1.2.0.0R
Ticks and crosses - now you know which challenges you've finished and how (successfully or not)
You can now delete certain challenges (there's almost no need in full-clearing now, hooray!)
User will be asked once again if they want to clear all the challenges now. Don't be afraid of miss-clicking!
A tiny bit more balanced
v1.1.0.0R
Spore challenges
Save/Load system