Three In A Row - How to make a game like Candy Crush in App Inventor 2

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Three In A Row - How to make a game like Candy Crush in App Inventor.\r
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Inspired by an article on Raywenderlich.com by Matthijs Hollemans: I have made this game in Appinventor.\r
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The challenge was to translate a gametutorial for objective-c and iOS to App Inventor and code in the blockeditor.\r
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Because of the limitations in the screen/workarea where all the code is placed in one screen, I had to make the game more simple than the game Matthijs makes in his tutorial.\r
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Thanks to Matthijs Hollemans and Ray Wenderlich for this great tutorial among others.