You could trying porting the web games using phonegap[0] or titanium[1].

[0] http://phonegap.com/

[1] http://www.appcelerator.com/titanium/titanium-sdk/

Don't bother with PhoneGap on Android, the experience is terrible (especially on Android 4.4). A good alternative is the CrossWalk project.

On iOS PhoneGap runs reasonably well.

i'm tempted to just get all those games, put in a "full screen" page and adding either touch events or simply using the trackball (which a few old ancient android phones still have)