Who plays: In an intramural tournament, all the matches happen between teams or classes from the same school, so nearly every student gets a chance to play. In an extramural tournament, one school's team travels out to compete against teams from other schools or colleges.
Why it's held: Intramurals are organised to get the maximum number of students active and involved, they are inclusive by design. Extramurals are organised to test a school's strongest players against outside competition and build its sporting reputation.
What it feels like: Because intramural games stay within the same campus and community, they tend to be relaxed and participation-focused. Extramural games carry the added weight of representing the institution, so they are typically more competitive and higher-pressure.
Common ground: Both still follow proper fixtures and rules and aim to build skill, discipline and team spirit, the difference lies mainly in scale and who is allowed to take part.