Every casino game has a return to player (RTP) percentage, which indicates the percentage of each wager that is returned to the player. If a game had an RTP of 100%, the chances of winning or losing would be the same. However, the vast majority of casino games have an RTP below 100%.
Crypto Roulette is no exception, with European roulette's RTP being 97.3%, while American roulette's RTP is 94.74%. In other words, if a player bets €100, statistically, he wins €97.30 in European roulette and €94.74 in American roulette. These winnings are lower than the original bets, making it clear that the player statistically loses money on every bet placed on roulette.
House edge indicates the statistical advantage the casino has over players, and can be calculated as:
House advantage = 100% - RTP
Thus, the house edge in European roulette is 2.7% and in American roulette is 5.26%. This means that in the long run, for every €100 a player bets, the casino wins €2.70 in European roulette and €5.26 in American roulette.