The concept of Rollercoin
Rollercoin is an online crypto mining simulator, where you can play games, buy miners, participate in various events and trade in the marketplace. The goal is to gain power. Power can be gained by playing games or by buying miners and placing them on racks in your room. With every event and season you get new miners and enhance your room, that leads to mining more crypto.
How does the mining work ?
You place miners in your room, play games and participate in events. Based on your overall power, so from miners, games and more you get real crypto, that you can withdraw. The amount you mine is calculated by the share of your power and the network power of the crypto you want to mine, you get a percentage of every block mined. Blocks are mined every 10 minutes. You can mine Litecoin, Bitcoin, Ethereum, BNB, Doge, TRX, and more coming soon. You can also split your power and mine 50% Bitcoin and 50% Doge for example. There is also the option to mine in game currency called RLT. RLT can be used to buy miners in the marketplace, store or to upgrade your room. 
Where does the money come from ?
The crypto that players gain based on their power is funded by ads that are on the website, Taskwalls, and crypto deposits of players to get in game currency or to buy miners. Since its foundation Rollercoin has payed out about 70 BTC.
What is the earning potential ?
The earning potential of Rollercoin is very dependant on you dedication and also on your country. TaskWalls can give you a lot of RLT, so people living in USA or UK have it easier to make some extra RLT. But when playing under standard circumstances you should be able to earn at least 20-40$ monthly after a year of playing.
This is just an introduction and I hope I made you more curious and interested about Rollercoin. Here is my referral link https://rollercoin.com/?r=lsfuuoe3 , that will give you 1000 Satoshis as a welcome bonus. If you decide to embark onto this adventure, I wish you luck and joy fellow Roller!