There is no simple answer to such a broad question. It depends on far too many factors: the game itself, what is the RTP, maximum prospect, stake, game mood (hot/cold) at the moment, how full is the prize pool, how fair is the software, etc. Most casino machines (video games - automatic table games or slots) are advertised with a theoretical return rate, which shows the odds despite the RNG (Random Number Generator) that determines the outcome of each round. For example, in American roulette, your odds of betting on red or black are 50/50 (1/1), the winning probability is 46.37%, the house edge is 5.26% and the theoretical calculated RTP index is 94.74%. On the other hand, if you play a Progressive Network Jackpot (you should try the Progressives at InstantPay Casino), the returns can be significantly lower (around 92%), but there are some incredible amounts (2,3,4 or more mln CAD) that can be won.