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CloseReview for Clines by RebekahJF
Rated 4 out of 5 stars
It would be better if the 3 balls that pop up after every move, popped up according to some logical rule. That way you could figure out the pattern and try to predict where they would pop up. It is challenging and addictive, though.
This review is for a previous version of the add-on (1.2.2).To create your own collections, you must have a Mozilla Add-ons account.