Treasure Nile by Royal Vegas mobile casino was the world’s first mobile slot game to offer a progressive jackpot, and this history-making mobile slot still has all the excitement of a true game-changer! Treasure Nile is a 5-reel 9-payline slot offers coins for 50p and you can play up to 9 coins at a time. Plus, with the progressive jackpot, Treasure Nile has been known to overflow with payouts of over £350,000!