MLB Career Simulator
Pick your team, live it season by season, handle injuries and trade offers, and see how many World Series you win
Unofficial simulator. Not affiliated with the MLB or its teams; names and colors only identify each team.
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Free Online MLB Career Simulator
The MLB Career Simulator is a decision-driven minigame: you create your player, pick one of the 30 major league teams, and simulate season after season. Along the way you'll face injuries (surgery and miss the season, or play through the pain?), free-agency offers when your contract expires, and eventually the choice to retire or play one more season. Your decisions, your overall rating, and a bit of luck decide whether you end up hoisting the World Series trophy or a role player. There's no sign-up or server: your name and your career history are saved only in your browser's storage.
Why use MLB Career Simulator
- Free, no sign-up, nothing to install — play directly in the browser
- All 30 MLB teams with real team colors and a custom jersey showing your name and number
- Real decisions (injuries, rival team offers, retirement) that change the course of your career
- Nothing is uploaded to a server: your name and career history are saved only in your browser (localStorage)
- Local hall of fame to compare your best careers and replay as many times as you like
How to use it in 3 steps
- 1
Create your player
Enter your name, pick a jersey number, and choose your position on the field.
- 2
Choose your starting team
Select one of the 30 MLB teams to start your rookie season.
- 3
Simulate season by season
Click 'Simulate next season' and resolve the decisions that come up (injuries, trade offers, retirement) until your career ends.
Questions about MLB Career Simulator
Is this an official MLB simulator?
No. It is an unofficial mini-game, not affiliated with the MLB or its teams. Names and colors only identify each team; statistics and results are simulated.
Is the MLB Career Simulator free?
Yes, it's a completely free minigame with no sign-up and no limit on how many careers you can play. It runs directly in your browser.
Which stats and saves does this MLB career sim include?
Pitchers get innings, ERA and strikeouts; batters get average, home runs and RBI. Choose a training focus and review the team record each season. Active careers and pending decisions resume in the same browser. Results are fictional statistics from a simplified simulation, not real MLB data or predictions.
How is winning the World Series decided?
Each season, a result is calculated from your team's strength, your overall rating, your health and morale, plus a random factor. The better that combination, the further you go in the playoffs, up to the title.
Is my data stored on a server?
No. Your player's name and your finished career history are stored only in your browser's local storage (localStorage) and are never sent to a server.
Can I choose my position?
Yes. You can choose between Pitcher, Catcher, first, second and third base, shortstop, outfielder, or designated hitter before starting your career.
Does the game use official MLB team logos?
No — logos are trademarks of each team, so the simulator uses badges with each franchise's real colors and a generic jersey customized with your name and number.
Is MLB Career Simulator free?
Yes, MLB Career Simulator from WebHerramientas is 100% free. No registration or subscription required. You can use it as many times as you need at no cost.
Is it safe to use MLB Career Simulator online?
Yes, all information is processed directly in your browser. We do not store or send your data to any external server.
Does MLB Career Simulator work on mobile?
Yes, the tool is fully responsive and works on any device: phone, tablet or computer with a modern browser.