Kan Jam rules

1. Place the two goals 50 feet apart, facing each other, per the manufacturer's published rules.
2. Four players, in two teams of two. Partners stand at opposite goals.
3. You throw from beside your own goal toward your partner, who is standing at the far goal.
4. The practical footprint is about 60 by 20 feet — the 50 feet plus room behind each goal for the deflector.

Note what is not on that list: a throw that goes straight into the goal untouched. The scoring is deliberately built so that the assisted plays are worth more than the unassisted ones. Kan Jam is a cooperative game wearing a competitive game's clothes.

First team to exactly 21 wins. Some published versions of the rules add that a team going over 21 resets to 15 and play continues until somebody hits 21 exactly or scores an instant win.

The instant win is the rule that makes the endgame tense. A team on 19 or 20 that cannot find the exact number it needs can still end the game outright by putting the disc through the slot — a low-probability shot that becomes rational precisely when the arithmetic has stopped working.

If scores are level at the end, the published tiebreak is an overtime round: each team plays one round and the higher score wins.

The manufacturer publishes the rules thoroughly and the equipment barely at all. There are no published goal dimensions and no published set weight, so those fields are blank on our Kan Jam page rather than estimated.

If you are deciding between this and the other four-player fast game, Spikeball vs Kan Jam settles it on the shape of your space rather than on preference.