If there is a guide on how people can start the game, it will help us know more about the games. Or at least, we can see the image or something like that.
Maybe an off-topic discussion but it's just like other games that you simply need to download (PC).
Lots of sources where you can found the download link but for at least assuring a safe client download, you can download at the site.
No need for some images as a reference about how you can install and run the game but for some tutorials, you may refer to some game guides either by articles or Youtube videos.
mcgam or mcgame? Searched for mcgam.com online but found mcgame instead. Just wanted to go through the site to understand what you really mean by "minecraft server that is roulette bitcoin casino", and what minecraft you referring to. The combination (minecraft & roulette + casino) sound abit different from what I'm used to reading or hearing.
I will assume it's just a world. No bitcoin API related or something along those lines but who knows.
If you refer to my screenshot above, I can't access the server so I can't give a review yet.