Cryptocurrencies in games. Cryptocurrencies are currencies supported by agreed protocols. Thus, in a game, a cryptocurrency is a currency that allows players to make exchanges inside the game, which may also involve 'real' money. The Sims is a great example of using virtual money inside a game Most of the current crypto games are based on the Ethereum blockchain, so you will need to purchase Ether to play them. You'll need to use a cryptocurrency exchange platform to convert your money into Ether, and there's plenty of exchanges to choose from. In simple terms, cryptocurrency is a type of digital or virtual money. It serves as ordinary money, such as dollars, pounds, euros, yen, etc. But it has no physical counterparts — banknotes or coins that can be carried around, that is, the cryptocurrency exists only in electronic form.