As BitStarz strives to make sure that all of their games support betting with the use of cryptocurrencies, still some of their game providers only support fiat currencies.

There are many reasons for a game provider not to support cryptocurrencies – it can be legislative compliance or simply just preference. The outcome is obvious: as a crypto player, you can’t play certain games. However, that limitation is now a thing of the past.
To ensure that BitStarz players have the largest selection of games available to them as possible, the casino is introducing in-game currency conversion.
Convert from crypto to fiat
Let’s say you are depositing in BTC but would like to play a game on BitStarz that does not support bets in cryptocurrencies. When you launch the game, you will be given a suggestion of a fiat currency that you can use to start betting with.
In the background, your BTC balance will be converted into your chosen fiat currency using the latest exchange rates. For instance, when you place a bet of US$1, your game balance will be reduced in line with your bet, and your main casino balance will be reduced by the BTC equivalent in accordance with the latest exchange rates. The entire process is seamless, allowing you to enjoy nearly 5,000 BitStarz games regardless of your base currency.
For now, BitStarz offers crypto to USD, EUR, NZD and RUB conversions. You get to pick which one you prefer to start betting in.
Games
If you are a cryptocurrency player, check out these recently released games:
Before the in-game currency conversion feature has been introduced, most likely there are hundreds of games that were previously unavailable to crypto players. It’s really a game-changer that BitStarz has now unlocked this feature so that crypto players can enjoy any game at their casino.
Source:
https://www.bitstarz.com/blog/weve-gotten-rid-of-currency-speed-bumps