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:       trying out this website (totw)            (ID: 1a183) (Sort: Lottery)
    Conference: trying out this website (AFC)             (ID: d15j) (Sort: Conf) (Playoffs: 4)
      Division: trying out this website (trying out this) (ID: d11k4) (Sort: Div) (Playoffs: 4)
        Team:   blaziken                                  (ID: t112a)
        Team:   breloom                                   (ID: t1127)
        Team:   combusken                                 (ID: t1123)
        Team:   gardevoir                                 (ID: t111y)
        Team:   gengar                                    (ID: t111n)
        Team:   lucario                                   (ID: t111p)
  Kind: rec
  Sport: gaming
  Gender: male
  Country: USA
  State: 
  Level: A
  Season: 2015 (current: True)
  Author: Luke Millner
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
Div:
Points,
IfSomeTiesBrokenReturnHereIf2,
Average Points HeadToHead,
Average Points SameParent,
Average Points CommonOpponent,
Average Points SameGrandParent,
Average Opponent Points Won,
Average Opponent Points,
NFLCombinedRankingsConference,
NFLCombinedRankings,
Average GoalsDelta CommonOpponent,
GoalsDelta,
FairPlay,
DrawLots

Conf:  NFLSpecial

ConfHelper:
Points,
IfSomeTiesBrokenReturnHereIf2,
If    [(Size=2) Average Points HeadToHead]
[(Else) SweptAllOrByAll],
Average Points SameGrandParent,
Average Points CommonOpponent (MinGames=4),
Average Opponent Points Won,
Average Opponent Points,
NFLCombinedRankingsConference,
NFLCombinedRankings,
Average GoalsDelta SameGrandParent,
GoalsDelta,
FairPlay,
DrawLots

Lottery:    NFLSpecial

LotteryHelper:
Points,
Average Opponent Points,
If    [(All=SameParent) Call Div]
[(All=SameGrandparent) Call ConfHelper],
DrawLots
SortEnd

RulesBegin
  PointsForWinInRegulation:  1
  PointsForWinInOvertime:  1
  PointsForWinInShootout:  1
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  0.5
  PercentOfGamesThatEndInTie:  0
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.5
  WeightType:  Pythagenpat
  WeightExponent:  0.27
  WhatDoYouCallATie:  tie
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  promoted
  Promote:  0
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  relegated
  Demote:  0
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
1/28/16   lucario     2-0   gardevoir   (ID: g1pn3e)
1/29/16   combusken   0-2   breloom     (ID: g1pn3f)
1/30/16   gengar      2-0   lucario     (ID: g1pn3g)
1/31/16   gardevoir   0-2   blaziken    (ID: g1pn3h)
2/1/16    gengar      2-0   combusken   (ID: g1pn3i)
2/2/16    lucario     0-2   blaziken    (ID: g1pn3j)
2/3/16    gardevoir   0-2   breloom     (ID: g1pn3k)
2/4/16    gengar      2-1   breloom     (ID: g1pn3m)
2/5/16    combusken   0-2   blaziken    (ID: g1pn3n)
2/6/16    gardevoir   0-2   gengar      (ID: g1pn3p)
2/7/16    lucario     0-2   breloom     (ID: g1pn3q)
2/8/16    breloom     2-1   blaziken    (ID: g1pn3r)
2/9/16    gardevoir   1-2   combusken   (ID: g1pn3s)
2/10/16   gengar      1-2   blaziken    (ID: g1pn3t)
2/11/16   lucario           combusken   (ID: g1pn3u)
GamesEnd