Season 16 added MU's first gunner — the Gun Crusher — and the mechanically rich Arnil Temple. Level-cap expansion with season rewards became a recurring system, the Jewel of Harmony was renewed, and mastery crafting got its own bound talismans.
A magic-gunner hybrid wielding heavy firearms, the Gun Crusher launched with a full skill-enhancement tree and expanding item support across three patches — MU's most distinctive class since the Summoner.
A mechanical temple hunting ground with an elite zone, tuned for the new 7th-armor/6th-weapon mastery rung and stocked with the season's signature drops.
Raising the maximum level now came packaged with season reward tracks — a formula the game has repeated every season since.
The Jewel of Harmony system was renewed, mastery Chaos combinations gained bound talismans that protect crafting attempts, and the elemental system took another balancing pass. The Labyrinth of Dimensions was also restocked and rebalanced.