Cash

Cash is a type of currency in the game(s).but for the game only than outer-game currencies.

Cash can only be used for the shop, yet there are 2 ways possible to earn cash. Selling ores using the ore refinery by using your clones to mine. Or practically using your clones to attack players/other clones or you can do that yourself by using battle mode.
 * Selling ores
 * Attacking clones/players