"Nowadays, most slot machines have multiple pay lines. You choose how many lines to play and how much to bet on each, but you must bet at least one coin on each line to activate it or winning that line won't count."

"Every reel on a slot machine has a certain number of stops which contain either symbols or nothing. While machines with physical reels usually have 22 stops, virtual slot machines can have hundreds of stops."

"If you turn over a playing card, the chance it will be red is 0.5, or 50%. If the casino was fair, it would pay you $1 for a $1 bet. But if a casino pays you $0.90 instead, it has a 5% edge."

"Modern video keno can trace its roots all the way back to ancient China, where a lottery-style game called 'white dove' was used to finance the army during times of war and hardship."

"Casinos are specifically laid out to be disorienting and make you get lost so you keep playing. When you first walk in, pick a good landmark which can help you find the exit again."