CFL and NFL differences
The football in the CFL game is larger than the American - its roughly the same as a #3 rugby ball which is longer and fatter than an NFL ball. The CFL field is also longer (110 yards) and wider (65 yards vs. the NFLs 53.5 yards), and the CFL end zones are 20 yards deep as opposed to 10 yards in the NFL. The CFL goal posts are on the goal line, while the NFLs are on the end line at the back of the endzone. Unlike in North American football, there aren't so many differences in online slot games across the entire globe. Once you've played a few, you can get the hang of them all without much difficulty.