Default: The rules for the winter indoor league are the same as the outdoor league except for the exceptions below. As in outdoor, teams must supply their own footballs and flags.

Teams: The game is seven on seven. A short-handed team may play six versus seven. Home team supplies clock operator. If one team has no substitutes, the other team must run the clock and wins the toss. Injured reserve players must be visible to an official.

Jerseys: Jerseys are required for the first game. As with outdoor, violation of this rule is a penalty (lose the coin toss and 15 yards). If two teams have the same color jersey, the following tie-breaker is used to determine which team is allowed to keep their jerseys 1) sponsors name on the jersey, 2) better record, and 3) winner of a coin flip.

Field: The field size is officially 30 x 60 yards. There is a fixed first down at midfield. The walls (boards) and the ceiling are always out of bounds.

Clock: Game is 50 minutes long with a running clock, stopping only for time-outs, the two-minute warning and injuries. The last tow minutes of the game are timed by regular CDFFL rules. There is no halftime. Play clock is 25 seconds. There is no mercy rule.

Time-Outs: Each team has two time-outs of one minute in length.

Penalties: Penalty yardage is one-half of the outdoor (rounded up to the nearest yard). Fighting and abuse of officials results in an automatic ejection for the season. Ejected players must leave the arena. The referee will signal all penalties.

Offense and Defense: Running rules are C Division (no stiff-arm). Line rules are B division. As in the outdoor, a defensive end may line up head-to-head with a tight end that is within one foot of the guard. The offense must have a receiver on the line of scrimmage on both sides of the center, according to A Division rules (violation is illegal formation). A man in motion at the snap must be on the line of scrimmage unless there is another receiver on the line of scrimmage on his side.

Special Teams: Instead of kickoffs and punts the ball is taken on the eight yard-line. Field goals and kicked extra points are permitted according to B/C division rules.

Placement After Missed Field Goal: If the line of scrimmage of a missed field goal was inside the defense’s eight yard-line, the ball comes out to the eight yard-line. If the line of scrimmage of a missed field goal was outside the defense’s eight yard-line, the ball is spotted on the line of scrimmage of the missed field goal. On a fourth down field goal attempt, where the ball isn’t kicked, the ball is spotted as if the kick was missed. If the ball wasn’t kicked, and it wasn’t fourth down, the ball is spotted as if the play wasn’t a field goal – spotted at the point of fumble or flag pull. A kicking block counts as the ground.