demo rouletteI downloaded roulette royale from playstore for my phone. It works alrht and has both single and double zero. It's free to play but it's more like a simulator. No real dealers or $. There are options to play solo or live with others. I sometimes use it to practice new systems or to just kill a few minutes.The European version is played using a roulette wheel which has 37 numbered pockets from 1 to 36 (red and black) and 0 (green). Super realistic 3D roulette.