Would it be possible to create games within Steem, hopefully games that can't be botted, and for your score and time you put into them, you would get another token as reward which within steem market would be tradable and users could buy it for special powers or other stuff that has with the game to do?

I'm just thinking sort of like candy crush, slither, etc. Except that it would reward you this new currency which can be traded for steem and other currencies. Would you need another blockchain for it or would it work within the existing one without disrupting it?