Ultimate Frisbee rules run to twenty pages, so I came up with this for my classes. I thought I'd share it, but I couldn't see the point in posting an Instructable when my school's rules require written permission from every parent involved before pictures of kids go online, so I just took advantage of Rachel fixing the topic-posting bug. Indoor Ultimate Frisbee Lite (“Indoor Lite”) 1. The play's the thing: all players and observers must keep to The Spirit Of The Game. Teams shoukd self-referee. If any dispute requires a decision by a bystander or observer, that decision is binding. 2. The game may be played with and disc agreed upon by both team captains. 3. Teams of up to 8, with a maximum of 5 players on the field. 4. The game continues for either an agreed length of time, or to an agreed score (for example, “first to five”). 5. Before play, team captains agree the end zones and playing field, and choose ends to defend. An indoor game has no “out of bounds”, and play continues as normal if the disc bounces off walls, ceiling or fixtures in the room. 6. When the opposing team gains possession of the disc, it is called a turnover. 7. Ultimate is non-contact sport – intentional obstruction of, or contact with another player will result in a turnover. If a turnover is the result of a rule-break, the disc is handed to the nearest opposing player. 8. At the start of play, each team gathers in their end zone. One captain throws the disc towards the opposing team. Nobody may enter the playing field until the disc passes the half-way mark. 9. A point is scored when the disc is caught in (or above) the opposing team's end zone. 10. After a point is scored, all players return to their own end-zone, and the player who caught the disc to score the point throws the disc to re-start the game. 11. A player in possession of the disc may not move, but may pivot on one foot. “Travelling” results in a turnover. 12. The player in possession of the disc must throw the disc within five seconds – any near-by player may count to five out loud. Holding the disc past five seconds is a turnover. 13. If the disc hits the ground, possession passes to whichever team did not touch it last – if team A throws it and nobody catches it, team B gain possession. If team A throw the disc, team B block its flight and it then hits the ground, then team A regains possession. If team A throw the disc, but team B catch the disc in the air, team B gains possession and play continues. 14. If two players catch the disc, whoever caught it first gains possession. If two players catch the disc simultaneously, a single round of rock, paper, scissors determines possession. 15. Unlimited substitutions may be made after any point is scored. House Rules. Because Indoor Lite can be played in a wide range of venues, typically school gyms or halls, some “house rules” may be developed, such as “if the disc goes through the basket ball hoop, that's a point as well” or “if the disc falls behind the vaulting horse, possession turns over and everybody goes back to their ends to start play again”. Before play begins, any new or visiting players must be made aware of the house rules. I also blogged this.