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1.
To play a (usually online) computer game in the most exploitative and goal-maximising way possible, ignoring other motivations such as roleplaying, realism, sportsmanship and 'fun'. Also known as powergaming.

In some games pixelwanking is encouraged and/or necessary, while in other games, especially those with a heavy roleplay element, 'pixelwankers' are frowned upon and considered a pest. The tabletop equivelant is a Munchkin.
In this game it's easy to progress to start with, but to really reach the top you have to pixelwank like crazy.

Don't invite LordMark to our guild, he's just a pixelwanker.
by piemasteruk April 06, 2009