Some Flash and PHP back-end and even the httpd.conf edit­ing I was in­volved in: Aar­dap­pel An­ders Pieper Casi­no. In­ter­nal­ly the sym­bols in the mix­er are mod­elled to go round, so it's not just some ran­dom im­age ap­pear­ing, but a true em­u­la­tion of the reels in a mix­er, that had to be vir­tu­al­ized a bit for per­for­mance is­sues, es­pe­cial­ly for the Mac. The API is XML and XPath, and the Pri­jzen Pot is just as elab­o­rate.