I have been searching some tools for multi-platform game engine which support for all mobile devices(Android, IOS, Windows, Blackberry). I found Construct 2 game engine but I am worried about weather this will support for all mobiles or not? Is it possible to build game by using phonegap? Anybody help me to get more idea about this. Or else please suggest me other tools which we can develop games from scratch HTML5, Javascript. While searching I found these engines 1. Quintus engine 2. Construct 2
Not sure if you checked this out: https://www.scirra.com/ But it says here that you can develop for Windows, iOS, Android, Blackberry.
Here are a list of games made with Construct 2: http://www.scirra.com/arcade
If you're still unsure about the engine, I recommend running simulators for each OS on your PC (using Virtual Box or etc..)
Good Luck!