Jackpot Cash uses the RTG software.
Deposits and Payouts are only done in Rand Currency but you can use moneybookers and the currency will be converted to Rands.
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Jackpot City is a microgaming casino that accepts deposits in multiple currencies, but unfortunately USA Players are not accepted.  
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Jackpots in a Flash is a Microgaming Flash Casino, which means you can play the games directly in your browser. No need to download the gaming software.
Go to Jackpots in a Flash