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: DPC Europe Upper Div (DPC Europe Uppe) (ID: 1a23n) (Sort: Conf) (Playoffs: 4)
    Team: Alliance             ([A])             (ID: t110ht)
    Team: High Coast Esports   (HCE)             (ID: t110hu)
    Team: Team Liquid          (Liquid)          (ID: t110hv)
    Team: Team Nigma           (Nigma)           (ID: t110hw)
    Team: OG                                     (ID: t110hx)
    Team: Team Secret          (Secret)          (ID: t110hy)
    Team: Tundra Esports       (Tundra)          (ID: t110hz)
    Team: Vikin.gg                               (ID: t110i0)
  Kind: pro
  Sport: dota
  Gender: coed
  Country: EU
  State: 
  Level: A
  Season: 2021Season1 (current: True)
  Author: Poddo
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
Conf: Seed [(1-8) Call Standard]
Standard: Points, Wins HeadToHead, GoalsDelta HeadToHead, GoalsDelta,
(side) DrawLots, Playoff
Bubble: Points, (side) DrawLots, Playoff
SortEnd

RulesBegin
  PointsForWinInRegulation:  1
  PointsForWinInOvertime:  1
  PointsForWinInShootout:  1
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  1
  PercentOfGamesThatEndInTie:  0
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.5
  WeightType:  PercentOfPointsWon
  WeightExponent:  0
  WhatDoYouCallATie:  tie
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  Major Playoff
  Promote:  1
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  Lower Division
  Demote:  2
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
1/19/21   Liquid     2-0   Vikin.gg   (ID: g111mw0)
1/19/21   Tundra     1-2   Secret     (ID: g111mw1)
1/20/21   [A]        1-2   Nigma      (ID: g111mw2)
1/23/21   HCE        1-2   OG         (ID: g111mw3)
1/23/21   Liquid     1-2   Nigma      (ID: g111mw4)
1/26/21   Liquid     2-0   HCE        (ID: g111mw5)
1/26/21   OG         2-1   Tundra     (ID: g111mw6)
1/27/21   HCE        0-2   Tundra     (ID: g111mw7)
1/30/21   [A]        2-0   OG         (ID: g111mw8)
1/30/21   Vikin.gg   0-2   Secret     (ID: g111mw9)
2/2/21    HCE        0-2   [A]        (ID: g111mwa)
2/2/21    Liquid     0-2   Tundra     (ID: g111mwb)
2/3/21    Secret     2-0   Nigma      (ID: g111mwc)
2/6/21    Liquid     0-2   Secret     (ID: g111mwd)
2/6/21    Nigma      1-2   Vikin.gg   (ID: g111mwe)
2/9/21    [A]        2-1   Tundra     (ID: g111mwf)
2/9/21    Nigma      1-2   OG         (ID: g111mwg)
2/10/21   Vikin.gg   0-2   HCE        (ID: g111mwh)
2/13/21   OG         1-2   Vikin.gg   (ID: g111mwp)
2/13/21   Secret     2-1   [A]        (ID: g111mwq)
2/16/21   Nigma      2-0   Tundra     (ID: g111mwm)
2/16/21   Secret     2-0   HCE        (ID: g111mwr)
2/17/21   Vikin.gg   1-2   [A]        (ID: g111mws)
2/20/21   Liquid     2-1   OG         (ID: g111mwj)
2/20/21   Vikin.gg   1-2   Tundra     (ID: g111mwt)
2/23/21   Liquid           [A]        (ID: g111mwi)
2/23/21   Nigma      2-0   HCE        (ID: g111mwk)
2/24/21   OG               Secret     (ID: g111mwn)
GamesEnd