How about you do your own homework...
https://play.google.com/store/search?q=64 bit games&c=apps
https://play.google.com/store/search?q=64 bit apps&c=apps
And these are just the ones that declare it... not a requirement of the Play store.
Sigh. Why do I waste my time trying to explain things to non-developers?
Using your logic I could claim that virtually all Apps in The App Store are 64bit just because Apple has told developers that all Apps submitted must have 64bit support (by Feb 1, 2015).
Targeting your App for 64bit devices is NOT the same as actually coding to specifically take advantage of 64bit. And this is what the Apps you listed in your links are: regular, run-of-the-mill simple games and Apps that have added support to run on 64bit devices. They are NOT 64bit Apps.
Did you REALLY think it was going to be as easy as performing such a simple search?
Opps, I see you edited your comment and added even more proof that you're not a developer. Sorry, but using an SDK doesn't make an App 64 bit. All it makes is a "compatible" App than can be targeted to run on 64bit processors.