The league will be ten (10) rounds (weeks).  Each round the players will play a set of four (4) machines picked at random with a best attempt at including games from multiple eras given the available machines and previously used machines to try and maximize the games available at the location.
Initial seeding for groups will be done randomly for the first round. Each subsequent round players will be seeded by the number of wins the player has accumulated with highest number of wins given the highest seed. Any ties will be broken by the previous number wins in the previous rounds until the tie is broken and finally randomly.
Players will receive one (1) point for each player they finish higher than on each machine, for a maximum of three (3) on any game. Any group of three will multiply their points by 1.5x. Any group of two players (which is unlikely) will multiply their points by 3x. Player groupings will be determined by who is present for the round, this may cause players with lower rankings to play in higher groups than they might have with a full field.
Given enough players, subsequent rounds will be bracketed out into multiple tiers. Tiers will be at minimum six (6) players.
Players that do not show up for a round will receive a 0 for that round. To allow players to miss a round or two, after the third round, the lowest round finish will be excluded from the seeding calculation. After the sixth round the bottom two rounds will be removed from the calculation for the remainder of the league.

IFPA rules are in play.

In the case of any game malfunction a new game will be chosen at random.

Groupings by week:
Week 1  - Random seeding, Pinburgh style groupings
Week 2  - Pinburgh seeding with a single tier
Week 3  - Pinburgh seeding split into two tiers
Week 4  - Pinburgh seeding split into two tiers
Week 5  - Given enough players, Pinburgh seeding split into up to three tiers
Week 6  - Given enough players, Pinburgh seeding split into up to three tiers
Week 7  - Given enough players, Pinburgh seeding split into up to four tiers
Week 8  - Given enough players, Pinburgh seeding split into up to four tiers
Week 9  - Ordered seeding in as many groups of four as possible, then groups of three.
Week 10 - Ordered seeding in as many groups of four as possible, then groups of three.