This game is unrelated to bitcoin other then the fact that you will be able to purchase VIP and other stuff with bitcoin.
http://www.mmatycoon.com/ This game is an MMA game where you are a manager and can create fighters and do many things related to MMA (start an organization like UFC , start a clothing company , a GYM , a nutrition company etc etc).
I am working on a game where instead of MMA , you will be a Lanista , create gladiators , do many things related to gladiatoral warfare (like start houses where your and other lanista's gladiators can train , start blacksmith to sell weapons and shields , start armor shop to create armors for gladiators , start slave market where you can buy and sell others gladiators , so and so , haven't thought really deep into it yet)
Basically , a game where you are a lanista whose aim is to train and raise best gladiator out there , which in return will bring you coin (will decide the name , probably something like Dinarii or something) and you can have more gladiators and more , until you can not hold more gladiators in your house.
Since I am in the earliest steps so far , I am creating a 'clicker game' based on this idea before I do anything further , clicker games are veeery easy to make and it usually works great as proof of concept in game world , if I can make it soon I will upload it to places people can play and eventually will continue to this Lanista Tycoon idea if clicker version is liked or not.