There was Gameshark, a legal device sold to hack your games and create codes within them.

FORBES: Microtransactions are the New Cheat Codes, and Why that's Sad

Aitcheson not only codes his games, but also produces the art and every other asset he can, keeping costs to an absolute minimum.

FORBES: Greedy Bankers and One-Man Game Development

The Grapevine, Texas, company also has begun selling codes for additional content for existing games, such as extended stories and extra maps.

WSJ: Sony Considers��but Rejects��Dropping Disk Drive From Game Console

The boost is unevenly distributed across postal codes, with values in Stratford, the games' host neighborhood, rising more modestly, at 13%.

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All Wii U Deluxe Set owners who purchase digital content for Wii U, including downloadable games in the Nintendo eShop for Wii U and download codes sold at select retail stores, will earn points with a value equivalent to approximately 10 percent of the Nintendo eShop list price of each purchase.

ENGADGET: Wii U Deluxe Digital Promotion will give gamers a $5 credit for every $50 spent on downloads