Of course, vast amounts of single-player content in a bad game is no good thing, so it is a relief that Injustice is a fun fighting game with a good balance between diving in and learning the deeper complexities of the systems.

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Many who have left big firms to join or start boutiques report a similar level of learning, growth and fun.

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To date, some of the most successful apps replicate learning games in the classroom but perhaps with a little more fun.

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