Rules:
- Ulama de cadera or hip ulama. A hip ulama team consists of five or more players (but there could be as many as twelve) wearing loincloths, with leather hip pads for some protection against the heavy (3 kg, around 7 lb) rubber ball.
- Ulama de antebrazo or forearm ulama. Played on a smaller field, with teams of one to three players and a ball lighter than that of hip ulama, the games requires the players to return the ball using their wrapped forearm. Women often play this game.
- Ulama de mazo or Ulama de palo, in which a heavy (6–7 kg or 13-15 lb) two-handed wooden paddle strikes a 500 g (1 lb) ball, usually with teams of three or four.
Credit for rules: https://en.wikipedia.org/wiki/Ulama_%28game%29