5 Video-Game Tricks For More Loyal Customers

Smart companies are harnessing the tactics that video games use to hook customers and keep them engaged. Here's how to stay ahead of the game.

If you've played Candy Crush Saga or Cut the Rope, you know games can be addictive. Reach a new level, earn a booster, or get a top score and suddenly the reward center of your brain is in control--now you've just dropped a bunch of money on virtual hammers.

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