Challenging, but well worth it I love how challenging this game is. The learning curve for challenges differs, but if you're willing to learn something and push yourself, it's a great game. If you want to pretend to understand physics in a game, go shoot birds at pigs. My only complaint is that there should be a limited number of hints to get you started on some levels. Otherwise, perfect app
Amazing fun app! This was pretty fun, it was a bit hard to understand at first but then I got tight into it. I was actually looking for a physics simulator but I'm glad I found this, might buy the paid version. Also don't vote this app down if it doesn't work on your phone, email the developer instead.
Inconsistent Ran fine after initially installing, two days ago. Haven't updated, but can no longer load app. (HTV evo rooted cyanogen 6.1)
Astounding It's incredible how many difficult puzzles you can get with such a simple concept. I'm hoping there will be new levels soon!
Good game I am kind of like a critic so 3 star is a nice thing if you like chemistry then this is a good app but can't be used for studying and best way to demonstrate chemical kinetics though.
Would be five if users could submit puzzles. Great idea a for game, but buying full version for only limited number of levels isn't worth it.