If there is a parallel universe in which World War 2 didn't occur, I'd bet there are far fewer games there. Well, like it or not Hills of Glory 3D is a WWII-themed title that's part strategy and part "castle defense." On the upside, it's pretty enjoyable.

This is a follow up to the original Hills of Glory, but this time with a whole extra dimension. The graphics are clean and cartoon-y – it actually looks surprisingly good for only being a 49MB download. You're basically tasked with taking out enemy troops using a variety of weapons and abilities, but they are determined to destroy your bunker and go on to conquer Europe.

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Hills of Glory 3D is free to play, but that means in-app purchases are part of the deal. The more powerful weapons are in short supply and it costs money to buy more. You earn some in-game cash from playing, but real money will get you ahead faster. Such is mobile gaming these days, right?