I just got the impossible badge. But with Firefox it was really impossible to go below 169 seconds. By comparing with time in forum, I realized that each level with burning time was really slower. I did everything again in Chrome and I easily beat up the 160 seconds challenge.
I'm enjoying the game, unfortunately i'm not able to finish it.
Current status: Firefox -> not able to start, Chrome -> crash after the three bounty hunters and louise episode
Thanks to all of you for your comments.
Bottom right corner bug is now fixed. (Thanks for mentionning it Dave Yo and JustinStryker)
Smacked, I think it is because you were playing on the really first version (without savnig game). Sorry for the unconvenient. Normally it is also solved.
eluec5, thanks for your comment.
The colour inside the dots represents the number of square(s) having the same color the actual square touchs.
When the number of touched square exceeds the expected number, the circles become red.