The sport has common background with association football, ice hockey and field hockey. Like football, the game is normally played in halves of 45 minutes each (however, in the World Championships the halves can be 30 minutes each), there are eleven players on each team, and the bandy field is about the same size as a football pitch. It is played on ice like ice hockey, but like field hockey, players use bowed sticks and a small ball.
If it is very cold or if it is snowing, the match can be broken into thirds of 30 minutes each.
A variant of bandy, rink bandy, is played to the same rules but on a field the size of an ice hockey rink and with fewer people on each team. Bandy is also the predecessor of floorball, which was invented when people started playing with bandy sticks and light balls when running on the floors of indoors gym halls.
Reference: Wikipedia Bandy