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:       FIFA World Cup qualification - AFC (AFC WCQ) (ID: 1a1js) (Sort: League)
    Conference: A                                            (ID: d14hh) (Sort: Conf) (Playoffs: 0)
      Team:     China PR                           (CHN)     (ID: t1rx1)
      Team:     Iran                               (IRN)     (ID: t1rx2)
      Team:     South Korea                        (KOR)     (ID: t1rx5)
      Team:     Qatar                              (QAT)     (ID: t1rx7)
      Team:     Syria                              (SYR)     (ID: t1rx8)
      Team:     Uzbekistan                         (UZB)     (ID: t1rxb)
    Conference: B                                            (ID: d14hi) (Sort: Conf) (Playoffs: 0)
      Team:     Australia                          (AUS)     (ID: t1rx0)
      Team:     Iraq                               (IRQ)     (ID: t1rx3)
      Team:     Japan                              (JPN)     (ID: t1rx4)
      Team:     Saudi Arabia                       (KSA)     (ID: t1rx6)
      Team:     Thailand                           (THA)     (ID: t1rx9)
      Team:     United Arab Emirates               (UAE)     (ID: t1rxa)
  Kind: pro
  Sport: soccer
  Gender: male
  Country: World
  State: 
  Level: 
  Season: 2018ThirdRound (current: True)
  Author: Alexandre « Krach » Bourcier
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
Conf: Points, GoalsDelta, GoalsFor, HeadToHead Points, HeadToHead GoalsDelta, HeadToHead GoalsFor, HeadToHead Away GoalsFor, DrawLots
League: Least PositionInParent, Points, GoalsDelta, GoalsFor, HeadToHead Points, HeadToHead GoalsDelta, HeadToHead GoalsFor, HeadToHead Away GoalsFor, DrawLots
SortEnd

RulesBegin
  PointsForWinInRegulation:  3
  PointsForWinInOvertime:  2
  PointsForWinInShootout:  2
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  1
  PointsForLossInShootout:  1
  PointsForTie:  1
  PercentOfGamesThatEndInTie:  0.229166666666667
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.697916666666667
  WeightType:  PercentOfPointsWon
  WeightExponent:  0
  WhatDoYouCallATie:  draw
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  Qualified
  Promote:  4
  PromotePlus:  2
  PromotePlusPercent:  0.25
  WhatDoYouCallDemoted:  Relegated
  Demote:  0
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
9/1/16     AUS   2-0   IRQ   (ID: g1tuc9)
9/1/16     IRN   2-0   QAT   (ID: g1tuca)
9/1/16     JPN   1-2   UAE   (ID: g1tucb)
9/1/16     KOR   3-2   CHN   (ID: g1tucc)
9/1/16     KSA   1-0   THA   (ID: g1tucd)
9/1/16     UZB   1-0   SYR   (ID: g1tuce)
9/6/16     CHN   0-0   IRN   (ID: g1tucf)
9/6/16     IRQ   1-2   KSA   (ID: g1tucg)
9/6/16     QAT   0-1   UZB   (ID: g1tuch)
9/6/16     SYR   0-0   KOR   (ID: g1tuci) (Neutral)
9/6/16     THA   0-2   JPN   (ID: g1tucj)
9/6/16     UAE   0-1   AUS   (ID: g1tuck)
10/6/16    CHN   0-1   SYR   (ID: g1tucm)
10/6/16    JPN   2-1   IRQ   (ID: g1tucn)
10/6/16    KOR   3-2   QAT   (ID: g1tucp)
10/6/16    KSA   2-2   AUS   (ID: g1tucq)
10/6/16    UAE   3-1   THA   (ID: g1tucr)
10/6/16    UZB   0-1   IRN   (ID: g1tucs)
10/11/16   AUS   1-1   JPN   (ID: g1tuct)
10/11/16   IRN   1-0   KOR   (ID: g1tucu)
10/11/16   IRQ   4-0   THA   (ID: g1tucv)
10/11/16   KSA   3-0   UAE   (ID: g1tucw)
10/11/16   QAT   1-0   SYR   (ID: g1tucx)
10/11/16   UZB   2-0   CHN   (ID: g1tucy)
11/15/16   CHN   0-0   QAT   (ID: g1tucz)
11/15/16   JPN   2-1   KSA   (ID: g1tud0)
11/15/16   KOR   2-1   UZB   (ID: g1tud1)
11/15/16   SYR   0-0   IRN   (ID: g1tud2) (Neutral)
11/15/16   THA   2-2   AUS   (ID: g1tud3)
11/15/16   UAE   2-0   IRQ   (ID: g1tud4)
3/23/17    CHN   1-0   KOR   (ID: g1tud5)
3/23/17    IRQ   1-1   AUS   (ID: g1tud6)
3/23/17    QAT   0-1   IRN   (ID: g1tud7)
3/23/17    SYR   1-0   UZB   (ID: g1tud8) (Neutral)
3/23/17    THA   0-3   KSA   (ID: g1tud9)
3/23/17    UAE   0-2   JPN   (ID: g1tuda)
3/28/17    AUS   2-0   UAE   (ID: g1tudb)
3/28/17    IRN   1-0   CHN   (ID: g1tudc)
3/28/17    JPN   4-0   THA   (ID: g1tudd)
3/28/17    KOR   1-0   SYR   (ID: g1tude)
3/28/17    KSA   1-0   IRQ   (ID: g1tudf)
3/28/17    UZB   1-0   QAT   (ID: g1tudg)
6/8/17     AUS   3-2   KSA   (ID: g1tudh)
6/12/17    IRN   2-0   UZB   (ID: g1tudi)
6/13/17    IRQ   1-1   JPN   (ID: g1tudj)
6/13/17    QAT   3-2   KOR   (ID: g1tudk)
6/13/17    SYR   2-2   CHN   (ID: g1tudm) (Neutral)
6/13/17    THA   1-1   UAE   (ID: g1tudn)
8/31/17    CHN   1-0   UZB   (ID: g1tudp)
8/31/17    JPN   2-0   AUS   (ID: g1tudq)
8/31/17    KOR   0-0   IRN   (ID: g1tudr)
8/31/17    SYR   3-1   QAT   (ID: g1tuds) (Neutral)
8/31/17    THA   1-2   IRQ   (ID: g1tudt)
8/31/17    UAE   2-1   KSA   (ID: g1tudu)
9/5/17     AUS   2-1   THA   (ID: g1tudv)
9/5/17     IRN   2-2   SYR   (ID: g1tudw)
9/5/17     IRQ   1-0   UAE   (ID: g1tudx)
9/5/17     KSA   1-0   JPN   (ID: g1tudy)
9/5/17     QAT   1-2   CHN   (ID: g1tudz)
9/5/17     UZB   0-0   KOR   (ID: g1tue0)
GamesEnd