One of the variants of online casino roulette is the game known as Mini Roulette. In this game, players are placing bets on a miniature roulette wheel. There are only 13 slots, with the numbers 1-12 and a zero space, on which players can place their bets with effective roulette betting. Players can only place the straight up bet on this game, so the house edge is actually much higher than traditional roulette. Players are playing against a house edge of 7.69%, so they may be better off sticking to the traditional version.
French roulette is a variation on European roulette, with a single rule added. Players are still betting on a wheel with the numbers 1-36 and the single zero, but that zero plays a much larger role. Players may not place bets on the zero, but it can still help players with online roulette. If the zero is called, instead of losing their full bets, players can receive half of all of the even money bets. That means half of each of the reds, blacks, evens, or odds bets are given back to the player.
If players want to switch it up, plenty of casinos offer their own variants on online casino roulette as well. Players should be sure to check the rules, though, before playing.