Demo games should not be seen as same as regular games because they are meant for the purpose of making practices on gambling, so i expect its users to often play and do it over and over again in other for them to acquire a particular skill from knowing how to gamble by playing games, if someone want to get addicted, he may not have to waste time learning from demo games, once he places more priority on gambling than any achievement in life, he could e termed an addicted gambler.