Start: April 19, 2018
Type: Bitcoin and Cryptocurrency Collecting Game
Extras: RollerToken (RLT) and Blog (News and Updates).
Note: The RollerCoin has been already for a long time and is constantly being developed by the owners.
Update: From now on, RollerCoin supports multi-mining. (January 6, 2020)
(Setting: My power → Partition.)