scumming

Etymology 1

scum + -ing.

noun

1. (printing) The accumulation of sticky ink on a plate.
2. (chiefly in the plural) That which is scummed off; skimmings; scum.

Etymology 2

Probably from skimming, modified by the derogatory sense of scum.

noun

1. (video games, derogatory) The strategy of collecting easy rewards in unchallenging areas, e.g. when a high-level character visits levels suitable for low-level characters in roguelike games.
2. (video games, derogatory) The act of restoring a game's save file, or restarting the game, for the purpose of continuing play with a better outcome than was obtained the first time.