Basketball
Positions, rotations, shooting efficiency, draft lotteries and salary caps — plus how a basketball GM game and a career sim each model the sport.
28 guides · 8 calculators · Pro Basketball GM Franchise · Basketball Career Sim
Sports · 9 hubs · 21 calculators
Sports guides, calculators and simulators
Reign Creative makes two kinds of sports game. Draft and general-manager games put you in the front office: build a roster from a draft board, then see how it holds up over a season. Career simulators follow one player you create through an entire career. This section gathers what we publish about those sports — rules explainers, statistics, strategy guides and calculators — and organises it by sport rather than by app.
Each sport hub collects that sport’s guides, says which of our apps cover it and how they differ, and points to the calculators for its statistics. Guides that apply to every sport, such as salary caps, draft formats and career modes, are listed further down this page.
Choose a sport
Baseball
Batting and pitching statistics, lineups, pitching roles and two-way players — plus how a stat-led draft game and a career sim treat the sport.
31 guides · 7 calculators · 162-0 Baseball Draft & GM Team · Baseball Career Sim 2026
American football
Positions, depth charts, passer rating, clock management and the draft — plus how a football GM game and a quarterback career sim model the sport.
28 guides · 4 calculators · Football Franchise GM League · Football Career Sim 2026
Ice hockey
Icing, power plays, line combinations, positions and goaltending statistics — plus how a hockey draft game and a career sim model the sport.
29 guides · 4 calculators · 84-0 Hockey Draft & GM Manager · Hockey Career Sim 2026
Soccer
Offside, league tables, positions, formations and transfers — plus how a soccer draft game and a career sim model association football.
36 guides · 3 calculators · Pro Football GM Club Soccer · Football Career Soccer XI Sim
Rugby union
Positions by number, forwards and backs, scoring, squad rotation and how union differs from league — plus our rugby draft game and rugby career sim.
19 guides · 2 calculators · 24-0 Rugby Draft Pro League · Pro Rugby Career Sport Sim
MMA and boxing
Judging and the 10-point must system, weight classes, fight records, stances and style matchups — plus our MMA and boxing draft game.
22 guides · 5 calculators · 40-0 MMA & Boxing Fight Draft
Tennis
Scoring and tiebreaks, ranking points and why they expire, qualifiers, playing styles and big points — plus our tennis career simulator.
17 guides · 2 calculators · Tennis Career Simulator 2026
Golf
Scoring, World Handicap System calculations, course management, cuts and tour formats — plus our golf career simulator.
23 guides · 3 calculators · Golf Career Simulator Pro Tour
Draft games and career sims
A draft or general-manager game is about judgement across a whole roster: which players to take, which positions to cover, and how to manage contracts, rotations and depth once the season starts. The result is a record, and the record is the verdict on your decisions.
A career simulator is about one player. You create them, choose what to develop, and make the calls in the moments that decide games, while coaches, teammates and contracts respond to how the career is going. Where a sport has both kinds, the hub explains which one answers the question you are asking.
Other sports
We also make games for sports that do not have a hub here yet:
- Car Racing - Pro Career Racer — Start in karting, make the race-day calls, and work your way up to a championship fight.
Guides for every sport
Salary caps, draft formats, free agency, career modes and how simulators turn ratings into results work the same way whichever sport you follow. Each of these uses one of our apps as its example.
- Sports & GM6 min read
Expected Goals (xG) Explained: What the Number Measures and What It Cannot
What expected goals measures, how xG models are built from past shots, why the number is a probability rather than a prediction, and what xGOT and xGA add.
- Sports & GM7 min read
How Sports Scouting Works: Projection, Uncertainty and What Talent ID Research Shows
What scouts evaluate, why projecting a young player is harder than describing one, and what talent identification research says about selection accuracy.
- Sports & GM6 min read
How the FIFA World Ranking Works: The Elo-Style "SUM" Formula, Step by Step
How the FIFA men's world ranking is calculated: the Elo-style SUM formula, match importance values, shoot-out and knockout rules, and worked examples.
- Sports & GM7 min read
Penalty Shootout Rules: Order, Goalkeepers, Sudden Death and "Reducing to Equate"
How a soccer penalty shoot-out works under Law 10: who may kick, reducing to equate, five kicks then sudden death, goalkeepers and the 2026/27 double touch.
- Sports & GM6 min read
Promotion and Relegation Explained — and Why Closed Leagues Use a Draft Instead
How promotion and relegation work in an open soccer pyramid, why closed leagues use drafts, caps and revenue sharing instead, and what economists have found.
- Sports & GM7 min read
Regression to the Mean in Sports: Why Great Seasons Are Followed by Good Ones
Why an outstanding season is usually followed by a merely good one, how much of a record is luck in different sports, and how to read a career year.
- Sports & GM7 min read
The Relative Age Effect in Sports: Why Birth Month Shapes Who Gets Picked
Why youth teams over-select players born early in the selection year, how large the effect is by sex, age and level, and what fixes such as bio-banding change.
- Sports & GM10 min read
Tournament Formats Explained: Round Robin, Knockout, Double Elimination and Swiss
How round robin, single and double elimination and Swiss systems work, how many games each needs, and how much luck each format leaves in the result.
- Sports & GM6 min read
Offline Sports Games on Android: How to Tell Which Ones Actually Work
"Offline" means several things on Google Play. How to read a listing, run an airplane-mode test, and work out what a sports game really needs a connection for.
- Sports & GM7 min read
Sports Manager Games for Short Sessions: What Makes One Work on a Phone
Why most management games fail in a five-minute window, the four properties that let one survive it, and how to test any manager game before you commit.
- Sports & GM7 min read
Career Mode vs Franchise Mode: Two Sports Games Wearing the Same Jersey
Career mode and franchise mode look alike on a store page and play nothing alike. What each one decides, what it costs you, and how to tell which you want.
- Sports & GM4 min read
Career Sim or Manager Game? Choosing the Right Format
The two dominant sports-game formats compared on session length, decision type and replay value, with an honest account of what each one is bad at.
- Sports & GM4 min read
Coach Trust and Playing Time in Career Modes
Why playing time is the real currency in a sports career mode, how trust systems actually move, and the decisions that get you minutes rather than highlights.
- Sports & GM4 min read
Depth Charts Explained: How Teams Decide Who Plays
What a depth chart is, how it differs across sports, why the second name on the list matters more than people think, and how to read one as a GM.
- Sports & GM3 min read
Expansion Drafts Explained
How a new team is stocked from existing rosters, why protection lists are the whole game, and what makes some expansion drafts far kinder than others.
- Sports & GM4 min read
Free Agency Explained for GM Games
Restricted and unrestricted free agency, why the market overpays, and how to use it well when you are the general manager rather than a spectator.
- Sports & GM4 min read
How Draft Lotteries Work, and What They Are Trying to Fix
Why leagues randomise draft order, how weighted lotteries are built, what flattening the odds changes, and what a lottery can and cannot prevent.
- Sports & GM9 min read
How Fantasy Draft Strategy Actually Works
The mechanics under draft strategy: replacement value, tiers, positional runs, and why your draft slot decides which plans are even available to you.
- Sports & GM4 min read
How Player Career Modes Actually Work
What a sports career mode really simulates: progression curves, opportunity gating, situational sampling, and the loop between playing time and development.
- Sports & GM3 min read
How to Choose a Sports Career Sim
A decision guide across six sports career simulators: which sport suits which player, how session length differs, and who each one is wrong for.
- Sports & GM4 min read
Injuries in Sports Career Games, and How to Manage Them
Why career modes include injuries, what they actually model, and the decisions that reduce their cost — availability as a skill rather than as luck.
- Sports & GM4 min read
Rebuild or Retool? Deciding Which One You Are Doing
The difference between tearing a roster down and reshaping it, the honest tests for which your team needs, and why the worst outcome is doing neither.
- Sports & GM6 min read
Salary Cap Basics: How Budget Rules Change a GM Game
What a salary cap is, how hard and soft caps differ, and why a budget turns drafting from a ranking exercise into an allocation problem you can get wrong.
- Sports & GM6 min read
Snake Draft vs Auction Draft: What Actually Changes
Snake drafts allocate players by pick order; auctions allocate them by budget. What each format rewards, the arithmetic behind both, and how to pick one.
- Sports & GM6 min read
Sports GM Games Without Internet: What "Offline" Actually Means
Offline is four different things in a mobile game. Here is what each one means, why draft-and-sim games suit a flight, and how to test any app in five minutes.
- Sports & GM6 min read
Understanding Probability in Sports Simulations
Why a better roster still loses, how season length compounds small edges, and how many runs you actually need before a simulated result means anything.
Calculators
Work out the statistics the guides explain. Every calculator cites where its formula comes from. See how they are built.
True shooting percentage calculator, with eFG%, FG%, 3P% and FT%
True shooting, effective field-goal and the plain shooting percentages from one box-score line.
Open the calculatorPer-36 calculator, with usage rate, Game Score and assist-to-turnover ratio
Per-36 rates, usage percentage, Game Score and assist-to-turnover ratio from one player’s box-score line.
Open the calculatorFour factors calculator, with possessions, pace and offensive, defensive and net rating
Dean Oliver’s four factors for a team and its opponent, plus estimated possessions, pace and offensive, defensive and net rating.
Open the calculatorBatting stats calculator: AVG, OBP, SLG, OPS, ISO and BABIP
The full slash line, isolated power and BABIP from one hitter’s counting stats.
Open the calculatorERA calculator: ERA, WHIP, K/9, BB/9, K/BB and FIP
ERA (for nine-inning or shorter games), WHIP, rate stats and FIP from a pitcher’s line.
Open the calculatorPasser rating calculator: NFL rating and NCAA passing efficiency
NFL passer rating with its four components, and NCAA passing efficiency, from one stat line.
Open the calculatorSave percentage and GAA calculator for goalies
Save percentage, goals-against average and shots faced per game from a goalie’s line.
Open the calculatorHockey points percentage calculator, with points pace and magic numbers
Standings points, points percentage, pace over 84 or 82 games, and points-based clinch and elimination numbers against another team.
Open the calculatorWorld Rugby rankings calculator: the points exchange for any result
The rating points two teams exchange for each possible result under World Rugby’s rankings method, as it stands since 1 July 2026.
Open the calculatorWhat weight class am I? Boxing and MMA weight class finder
The boxing and MMA weight class for any weight, in pounds and kilograms, from four published weight tables.
Open the calculatorFight scorecard: score a boxing or MMA bout round by round
Score three judges’ cards round by round under the 10-point must system, add point deductions, and see the decision.
Open the calculatorTennis win probability calculator: from points on serve to games, sets and matches
The chance of holding serve and of winning a tie-break, a set and the match, from each player’s share of points won on serve.
Open the calculatorGolf handicap calculator: estimate your Handicap Index
Score differentials and an estimated Handicap Index under the World Handicap System.
Open the calculatorCourse handicap calculator, with playing handicap by format
The strokes a Handicap Index gives you on a set of tees, and the playing handicap for a format.
Open the calculatorStableford calculator: points per hole from your strokes and Playing Handicap
Stableford points hole by hole and in total, with Playing Handicap strokes allocated by stroke index.
Open the calculatorPythagorean expectation calculator: expected wins from points, runs or goals
The winning percentage and record a team’s points scored and allowed imply, with sourced exponents.
Open the calculatorDraft order generator: random, snake and third-round-reversal boards
A fair random draft order, and every team’s pick numbers in a snake, 3RR or straight draft.
Open the calculatorPerfect season calculator: how likely is 20–0, 40–0 or an unbeaten season?
The chance of a perfect or unbeaten season from one game’s chance of a win (and of a draw), with the assumptions stated.
Open the calculatorElo rating calculator: expected score, K-factor and rating change for any sport
The expected score and rating change for one result, by Elo’s formula, FIDE’s chess regulations or FIFA’s world ranking method.
Open the calculatorDraft lottery simulator: every team’s chance of every pick, with seeded draws
Exact pick-by-pick chances for a weighted draft lottery — MLB’s 2026 odds or your own league’s — plus repeatable simulated draws.
Open the calculatorMagic number calculator, with elimination number, games behind and winning percentage
The magic number to clinch, the trailing team’s elimination number, games behind and winning percentages for a two-team race.
Open the calculator
Good to know
Questions about this section
What is the difference between a draft game and a career sim?
A draft or general-manager game puts you in the front office: you build a roster from a draft board and judge it by the record it posts. A career sim follows one player you create through the stages of a career, from the early years to the professional game. Reign Creative makes both kinds; the table on this page shows which sports have which.
Do these guides predict real results?
No. They explain rules, statistics and strategy, and how our simulators model them. Nothing in this section predicts a real game, and none of it is betting guidance.
Are Reign Creative’s sports apps connected to any league or team?
No. Reign Creative LLC’s apps are not affiliated with, or endorsed by, any league, team, players’ association or athlete.
Which sports have both a draft game and a career sim?
Basketball, baseball, American football, hockey, soccer and rugby. The other hubs have one app each; every hub says which, and what it covers.
Reign Creative LLC makes the apps named here, so we have a commercial interest in them. App details come from each app’s Google Play listing; the copy in this section was written with AI assistance and has not been reviewed by a person. See the editorial policy.