Ad4Game has created a sample HTML/JS overlay preloader which will help you integrate our Ads on Flash and Unity3D content without need to access the source file.
<!-- Ad4Game Non-linear Preroll Ad Tags --><scripttype="text/javascript"src="//ads.ad4game.com/www/delivery/widgets/overlayads/auto.js"></script><scripttype="text/javascript"src="//ads.ad4game.com/www/delivery/widgets/overlayads/index.php?zoneid=10249&size=1&auto=1"></script><!-- END Ad4Game Non-linear Preroll Ad Tags -->
Implementation
Copy and paste the generated ad tags right before the closing of the <body> tag: