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.