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- Possibility to level to cap (lv 50) through quests.
- Some instances (althought of little importance, regarded as "training camps").
- Safe starting zones.
- Pre-made factions (althought there is freedom to defect/join factions ingame or create new factions)
Any more TP feature? I dont remember at moment.
So, these features listed above is enough to take away from AA the "sandbox" label? I think the answer is NO, since these features will not play any major influence in the most part of the expected gameplay of a medium player. They will only suit as a tutorial* and a way to avoid the mob grind to level (what is typical of korean mmos).
The pre-made factions will serve to make available players to pvp without any penaltys from the start.
*The devs themselves say that quests until lv 30 can be considered a "tutorial", presenting all the features available in the mmo to the players.