I just saw a clip of this unusual (by American standards) sport called kabaddi, and just had to sift it. The clip is from the 2006 Kabaddi World Cup.

At first kabaddi seemed like it was a team game of Red Rover mixed with wrestling mixed with capture-the-flag, but...well, no, just read the bit from Wikipedia.

From Wikipedia:

Kabaddi is a team sport originally from South Asia. It is popular throughout South Asia and Southeast Asia. It is the national game of Bangladesh, and the state game of Punjab and Andhra Pradesh in India. The name — often chanted during a game — derives from a Hindi word meaning "holding of breath", which is indeed the crucial aspect of play.

In the team, or international, style of kabaddi, two teams of seven players (wearing socks and boxer shorts, sometimes briefs) occupy opposite halves of a field of 12.5m x 10m (roughly half the size of a basketball court). Each team has five additional players that are held in reserve. The game is organized into two 20-minute halves, with a five-minute half-time break during which the teams switch sides.

The teams take turns sending a "raider" across to the opposite team's half, where the goal is to tag or wrestle ("capture") members of the opposite team before returning to the home half. Tagged members are "out" and are sent off the field. The raider must not take a breath during the raid, and must prove it by constantly chanting (called 'cant' or 'dak') during the raid. The chant-word is kabaddi in India and Pakistan, হাডুডু hađuđu in Bangladesh, do-do in Nepal, guddu in Sri Lanka, chado-guddo in Malaysia, Zoo in Iran, and techib in Indonesia.

Meanwhile, the defenders must form a chain, for example by linking hands; if the chain is broken, a member of the defending team is sent off. The goal of the defenders is to stop the raider from returning to the home side before taking a breath. If the raider takes a breath before returning to the home side, the raider is out and is sent off the field.

A player can also get "out" by going over a boundary line during the course of the play or if any part of the player's body touches the ground outside the boundary, except during a struggle with an opposing team member.

Each time a player is out the opposing team earns a point. A team scores a bonus of two points, called a lona, if the entire opposing team is declared out. At the end of the game, the team with the most points wins.

Matches are staged on the basis of age and weight. Seven officials supervise a match: one referee, two umpires, two linesmen, a timekeeper and a scorer.

The Punjabi style of kabaddi is also known as circle kabaddi, or ring kabaddi. In this version, played in a circular field, a single raider crosses to the opposing semi-circle where four "stoppers" await, arm in arm. The raider must tag one, and only one, of the stoppers and then run back across the dividing line of the circle, usually between two markers along that line, to receive one team point. If the tagged stopper can tackle the raider, or push the raider out of bounds, the stoppers' team receive the points. Raids occur alternately between the teams. The first raid of the match is worth 1 1/2 points, though, to prevent the possibility of a tie.