Play Worldwide Lotteries TodayPlay Worldwide Lotteries OnlineDon’t play too many cards within a short timespan while looking to recoup previous losses. Also, simply playing online keno over the land-based version is a good strategy in itself. After all, the online keno house edge is around 5%, while brick-and-mortar keno parlors may carry anywhere from a 15% to 40% house edge.ComparisonNZ Lotter..