scumming

/S K AH1 M IH0 NG/
noun
  1. 1

    The accumulation of sticky ink on a plate.

  2. 2

    (chiefly in the plural) That which is scummed off; skimmings; scum.

noun
  1. 1

    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. 2

    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.

Source: https://en.wiktionary.org/wiki/scumming