Stiff challenges ahead, but Perfect World is prepared But if Perfect World intends to succeed in mobile, it needs to overcome the challenge posed by Shanda and Glu Mobile. Glu is already well-known in the mobile gaming industry, but Shanda is aggressively moving into this space. Shanda's mobile segment is now 70 times bigger than what it was a year ago. Revenue from mobile games increase 50% sequentially in the recently reported third quarter.