As with all MMO's, DBO's leveling system is based on an EXP grind. A set amount of EXP is needed for a character to level. The cap is unknown at this time, but there are several class specific as well as race specific quests that you must complete in order to continue progressing in the game. Much like LOTRO, DBO's quest line are heavily entrenched within the story line of the game. At level 30 the character can undertake a quest that allows them to reach the adult phase of their character's life. In addition the character gets a major stat and skill boost. The speculated system regarding family lineage did not make any show in the beta so it is unclear at this time how much, if at all, it will play a part in continuing the game beyond your first character.