The world's top 25 gaming companies generated $94.1 billion in combined software revenue last year, according to Newzoo, marking a 29% jump from 2016. Mobile gaming revenue accounted for 46% of the total, followed by console games at 33% and PC games at 21%.  

Chart showing the top five gaming companies in the world.

Data source: Newzoo. Chart by author.

Sony, Microsoft, and Activision Blizzard are well-established game publishers. However, market leader Tencent (OTC:TCEHY) isn't a household name in the United States.

The Chinese tech giant's video game portfolio includes top e-sports title League of Legends, as well as mobile hits like Arena of Valor, Clash of Clans, and PUBG Mobile. Tencent has a 40% stake in Fortnite publisher Epic Games, and smaller stakes in Activision Blizzard and Ubisoft.

Meanwhile, many people forget that Apple (NASDAQ:AAPL), which takes a 30% cut of all sales of iOS games in its App Store, is also a leading game publisher. Though $8 billion equals just 3.5% of its 2017 revenue, that growth clearly complements the expansion of its services ecosystem, which includes Apple Pay, Apple Music, iTunes, and other services. The Mac maker is aiming to double its fiscal 2016 services revenue by 2020.