You can add leagues, big or small, to Sports Club Stats.
   It's free.
   It's easy.
   Just email import@sportsclubstats.com the:
      structure
      schedule
      and rules
   In a few minutes you'll get back a link to the league.
   Play around, have fun, you won't break anything.
   I look forward to seeing what you create.

Info about the various settings:
   https://docs.google.com/document/d/1-UneDNk6tkOrc_B-WBnGnc5KGiy2kttXC2fW8dR7QzM/edit?hl=en

For example, here is what created this league:

LeagueBegin
  League:     RG 2018                  (RG2018)          (ID: 1a1tc) (Sort: League) (Playoffs: 1)
    Division: Swag                                       (ID: d157d) (Sort: Division) (Playoffs: 2)
      Team:   Hell Marys                                 (ID: t1va4)
      Team:   Honky Tonk Heartbreakers (Honky Tonk Hear) (ID: t1va5)
      Team:   Hotrod Honeys                              (ID: t1va6)
      Team:   Hustlers                                   (ID: t1va7)
  Kind: pro
  Sport: miscellaneous
  Gender: coed
  Country: USA
  State: Texas
  Level: Number 1
  Season: 2018 (current: False)
  Author: Bro
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
Division: Points, HeadToHead Points, GoalsDelta, GoalsFor, DrawLots
League: (side) Least PositionInParent, Seed [(1-2) Playoff][(3-End) Least
PositionInParent]
SortEnd

RulesBegin
  PointsForWinInRegulation:  2
  PointsForWinInOvertime:  2
  PointsForWinInShootout:  2
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  1
  PercentOfGamesThatEndInTie:  0
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.5
  WeightType:  Pythagorean
  WeightExponent:  5.506
  WhatDoYouCallATie:  tie
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  Playoffs
  Promote:  2
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  Last Place
  Demote:  1
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
2/17/18   Hell Marys        173-204   Hotrod Honeys   (ID: g1xaap)
3/31/18   Honky Tonk Hear   245-154   Hustlers        (ID: g1xaaq)
4/28/18   Honky Tonk Hear             Hell Marys      (ID: g1xaar)
4/28/18   Hustlers                    Hotrod Honeys   (ID: g1xaas)
5/19/18   Honky Tonk Hear             Hotrod Honeys   (ID: g1xaat)
6/23/18   Hustlers                    Hell Marys      (ID: g1xaau)
GamesEnd