In nearly all MMORPGs, the development of the player's character is the primary goal. Nearly all MMORPGs feature a character progression system, in which players earn experience points for their actions and use those points to reach character "levels", which makes them better at whatever they do.[8] Traditionally, combat with monsters and completing quests for non-player characters, either alone or in groups, are the primary ways to earn experience points. The accumulation of wealth (including combat-useful items) is also a way to progress in many MMORPGs.