Mika Mobile is developer of the hit Android games Zombieville USA and Battleheart (which also exist in iOS versions). The company has announced that they will no longer be developing games for Android for simple financial reasons. Or perhaps the reasons aren't quite so simple, but easily explainable.
Android generates only about 5 percent of the income for the company. Despite this, the company allocated about 20 percent of its resources to fixing Android compatibility issues and other bugs. Part of that, obviously, is Android's fragmentation problem, but it is also a result of the fact that Android continues to trail iOS as a money-maker for devs.
In addition, Battleheart is priced at the relatively pricey $2.99 (for a game).
Either way, the developer will be missed. You can read the company's full blog post here.