But now, is such a copy really suitable? No! With so many games, it could easily discourage some impatient players. Therefore, in World of Underworld, early stage activities are small and exquisite, not taking up too much time, yet extremely interesting.
Aside from the events, there are many things that can be played within the game at any time of the day, all of which are interesting. This provides those with less leisure time to engage, without alienating the players who have a lot of time on their hands. As for the difficulty of the copy, although the early stages are challenging, they won't take too much time.
But later, when the level is high, players who can play to that level have a very high degree of sticking with the game, so the difficulty of the copy naturally escalates. Especially for the first-person copy, which has the highest difficulty. But the number of times it can be played is also limited, so players have ample time to prepare for it each week.