The concept of Epic Ten of E10 is superficially similar to the rules in the Dungeon Masters Guide for providing a way for characters to continue growing indefinitely after the “final” level. Instead of gaining more levels beyond 10th, characters instead gain bonus powers such as spell slots, feats, or class abilities. This allows the game to continue, and characters to continue to grow and evolve, but without gaining additional levels. E10 is a way to maintain the feel of the “heroic fantasy” tier of D&D without divorcing players from advancement entirely.