The rule is simple, but this is not the easy puzzle game. You can connect two balls using click/drag method you want. You can clear it if you make all the balls with blue; Also you can enjoy "Random mode" if you cleared all levels.
The antivirus report has confirmed that the app is totally safe for usage. Zinine developed DNA that lies within the Puzzle Games category. Over 50K users downloaded the game and the latest update was released on Oct 2, 2015.
On Google Play, this application is rated 3.8 by its users. Advertisements are a part of the app. Get the free .apk setup package of DNA 2.5.5 and check out users' reviews on Droid Informer. This installation package takes up 1 MB of disk space and it runs on Android devices 4.0 and higher.