Threes, precursor and inspiration to popular game 2048, has been removed from Google Play because it used "2048" as a keyword. Jessica Conditt reporting for Engadget:
Google – probably a human there, not a robot – reinstated Threes after just a few hours offline and following a stream of articles and Twitter activity around its removal. Of course, 2048 remained live on Google Play the entire time, alongside a bunch of other Threes clones. This string of events highlights one of the biggest differences between Google and Apple, and how they approach their app stores.
TechArcade also has a nice rundown of the situation with an angle on apps and games clones in app stores:
Pretty much any search for any popular game will turn up something that probably has a trademark or copyright that's being used without permission. Again, things are not as bad as they once were, and the App Store's got its own game title tomfoolery going on. But this Threes situation is ignoring thousands of active violations of store rules, intellectual property, and just common decency, to nail a big-name tile without warning for a questionable violation.
Take down without warning or any upfront notice was the biggest problem here. Good that Threes is back.