I cleared one of the earlier levels (3, I think), and there is indeed a bonus for that accomplishment. The bonus was something crazy, like 15. 3856302361238. Otherwise, nothing cool happened. I didn’t have time to finish that game; life intervened. However, I have finished level 12 several times and never scored higher than a 273.
215 last night at the end of Level 12, then 257 now. Not bad – means I’ll try again sometime. I like this! Very relaxing game. 