The film was about this futuristic sport called 'Rollerball' which involved balls, blood and guts, preferably lot's and spewed all-over the place. Savage Arena is basically a frenetically paced, extremely violent sports action game. Parental Guidance is of course a must. Two teams play the 'blood' sport, each harboring some eight mean ass-kicking players. The main objective is to get the ball in the back of the net.
Chunky bits get more points.
Scoring a goal won't be easy though and the harder the shot scored, the higher the points given as a reward. There are various ranges and types of shots in Savage Arena so don't expect it to be easy. Set plays also allow for some tactical elements. And don't forget to score. Other than that the only thing you'll need to take into account is that each game will be split up into four quarters similar in fashion to America's most beloved Football.