Naah i dont like the idea..
by using a template of an engine or template is not a part of making games..
then we talk about mods for a game or something like that.
making a 2d game is not hard but of course you need to show some spirit and make your own graphics, thats way more interesting than using a template or an engine.
even if you edit it, its not created by yourself and you cant take the full credits for it.