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This seems less like an indictment of PhoneGap, it's more of a warning not to build games in JavaScript.

Had the author used an appropriate tool for making games--a game framework like Unity--they wouldn't have run into all of these performance problems and it would've still been cross platform. Hell, Unity even has a JavaScript-esque scripting language if you're so set on learning only one language (although it's vastly inferior to C#)

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As far as I know, Crossy Road is built with Unity and it often skips many frames on my iPhone 5s. I'm not sure how Unity works, but it also felt like garbage collection - a single, long hang every few minutes of playing the game.

(Maybe things have improved, this was when the game was pretty new.)

Never experienced frame lag with Crossy Roads, and I played it a bit. Something like this _can_ happen with Unity, but if it happens it's 99,99% bad programming, and not the engine's fault, unless you do graphically extensive things, which Crossy Roads certainly didn't.

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