Adrenaline and excistement. Bingo games can be played from as little as 1p a ticket and with most games lasting approxiamtely 3-6 minutes, it can be a cheap form of entertainment. Most bingo tickets and games will automatically daub your ticket so you never miss a win and will highlight your card with 1TG, 2TG, 3TG etc to show you how close you are to winning the game. Seeing these can peak adrenaline and excitement. It can also become addictive.