This might be an issue with the new update of Jellybean. I had that game loaded on my last Nexus and it ran great. I will try and reinstall it and see what happens. Apps have a lot of information concerning compatibility on their download pages. It helps to look at reviews specific to our device. As suggested, emailing a developer about an issue politely, can sometimes go a long way.
BTW, Don't worry about not being tech savvy. We all start somewhere. I suggest spending some time here using the search feature and reading new posts and just try to absorb what you can. You will be amazed at what you will pick up. If you have a question that you cant find an answer too, their is a whole family here that will help.
Hope to see you around.
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