The PocketGamer.biz top 50 developers of 2013: 30 to 21

Considering the tens of thousands of publishers and developers who are daily making new mobile games and supporting live titles, the task of picking out the relatively small number of 50 as being 'top' may seem to be a Sisyphean exercise.
Yet, that process provides a wealth of useful information, while the rigor of directly comparing companies - one against another - forces us to think about what we mean by the term 'top developers'.
In terms of our process at PocketGamer.biz, we used metrics such as creativity, critical acclaim, sales performance, innovation especially in terms of business model, and that certain je ne sais quoi that only the best studios exude.
The full list - produced in conjunction with leading app store analytics company App Annie and the largest Chinese mobile game development platform CocoaChina - will be revealed daily through our Top 50 Developer of 2013 section.
30. Chukong/PunchBox
New entry
Its most successful title is the Fishing Joy franchise, which has been downloaded over 200 million times since its iOS release in 2011 and generates around $6.3 million a month. Most of the 10 million daily active players of the free-to-play arcade fish catching game are in China, but the game has also been released globally and more recently on Android.
29. Madfinger Games
Down 3 (compared to 2012)
Sure, they're not the most popular genres on touchscreen devices, especially given the blood and gore it adds to the mix, but downloads numbers measured in the tens of millions demonstrate that, if nothing else, Madfinger is fulfilling the itchy thumbs of console gamers on the go.
28. Nexon
New entry
Now, however, Nexon has itself an established studio it expects to generate at least $85 million in annual sales, thanks to core Japanese titles like Japan Pro Baseball Card Battle and Warriors of Odin. The combination of the two will be fascinating to see, especially in terms of their releases through Mobage and GREE.
27. ZeptoLab
Down 18
Out simultaneously for iOS and Android (including Amazon and Nook), its more thoughtful approach hasn't captured the imagination like Cut the Rope. The lack of free content on iOS may also have something to do with this. Still, ZeptoLabs has plenty more cooking for 2013. If nothing else, we've haven't seen the last of Om Nom.
26. Digital Cloud
New entry
Digital Cloud isn't a one-trick pony, however. Its has three Three Kingdoms-themed strategy games, which have also spent many weeks towards the top of the Chinese top grossing charts.
25. Konami
Down 11
In western markets, Konami's attempts to rework its console brands onto mobile have yet to find much success, although that may change with the release of Metal Gear Solid Social Ops on GREE.
24. GREE
Up 4 (previously listed as Funzio)
Still, this is a company with annual sales of $1.6 billion, and $480 million in cash, so its importance in the global industry is hard to overstate. 2013 can only get better.
23. Wooga
New entry
So with only two releases, mobile now accounts for 50 percent of Wooga's revenues; up from zero 15 months ago. And it's not stopping. It has four games in development for 2013; ranging from casual to midcore PVP titles
22. Glu Mobile
Down 5
Bottomline is the charts are getting more competitive and that's driving up expected quality. Glu is looking to overcome this by opening up its third-party publishing. It's hopeful about the potential of casino games too, thanks to investment in start-up Bee Cave, and a hook up with real money specialist Probability.
21. G5 Entertainment
Up 12
Still, that target will take some doing but G5 has deals with 80 third-party studios and is ramping up its Android activity. Internally developed titles such as the free-to-play Virtual City Playground have provided a foundation for growth as well. It accounted for 30 percent of Q3 sales.
You can see the full Top 50 Developers of 2013 list as it's revealed here.