Country: China
Market Value: $43.5 billion
Sales: $2.6 billion

Sales Growth: 64%
Employee Growth: 21%
Return on Investment: 52%
Total Return: 33%

The world's largest online gaming company, Tencent Holdings (700:HK), is cash-rich following a blockbuster year. Virtual weapons sales in games such as CrossFire helped generate $2.62 billion in cash or equivalents, according to the company's third-quarter filing. That's led to speculation about possible takeovers beyond China's borders, according to analysts cited in a recent article. For the more serious-minded, the 12-year-old company also provides instant messaging, online advertising, e-commerce, telecommunications, and operates the popular QQ.com portal.