A caller then calls out random numbers. If the number called is present on your board, you daub it off. The first player to get five numbers in a row, either vertically, horizontally, or diagonally, wins bingo.
any line means all numbers called in any one horizontal line are announced by the caller and marked on the scorecard. any 2 lines" means all numbers in any two horizontal lines are announced by the caller and marked on the scorecard.
A gladiator who won several fights, or served an indefinate period of time was allowed to retire, in many cases to continue as a gladiator trainer. Those who did win or buy their freedom, or at times at the request of the crowd or Emperor, were given a wooden sword (rudis) as a memento.
Yes, in ancient Rome, gladiators could be awarded their freedom after winning a certain number of fights or through other means, such as good behavior or being granted freedom by their owner.