What Is Legends Deck?
Legends Deck is a baseball card collecting and simulation game that runs entirely in your web browser. It is free to play. Every player card in the game is rated using real Statcast data, the same data MLB front offices use to evaluate players. Ratings update daily at 3 AM Pacific so your cards always reflect current real-world performance.
Players collect cards by opening packs, trading on the live marketplace, or earning them through gameplay. Each card represents a real MLB player with stats like exit velocity, launch angle, sprint speed, barrel rate, strikeout rate, and pitch movement. These numbers drive the game simulation, so your team performs the way the real players actually perform.
Key Features
Statcast-Powered Simulation
Every pitch and swing is simulated using real exit velocity, launch angle, pitch movement, and sprint speed data.
Free. In Your Browser.
No download, no console required, no purchase. Open your browser and play. Earn coins through gameplay and build your team for free.
Two Pillars, Built to Compete
Franchise (run a full front office: trades, free agency, drafts, and a simulated season) and the Card Game (collect, build, and play). Plus Exhibition, Ranked, Season, and PvP rooms.
Live Card Marketplace
Buy, sell, and trade cards with other players. Real-time pricing, price trend charts, standing bids, and AI-powered market intelligence.
Pack Opening
Rip Standard, Premium, and limited edition packs. Chase Diamond-rarity legends. Bulk open up to 25 packs at once with animated reveals.
Multiplayer & Ranked
Head-to-head PvP rooms and ranked ELO seasons (Bronze to Legend) with live pitch-by-pitch game feeds.
How It Compares
| Feature | Legends Deck | MLB The Show DD | OOTP Perfect Team |
|---|---|---|---|
| Price | Free | $70 console game | $40 PC game |
| Platform | Web browser | PS5/Xbox/PC | PC/Mac |
| Real Statcast data | Yes (daily updates) | Partial | Partial |
| Visual game simulation | Yes (pitch-by-pitch) | Yes (arcade) | Text-only |
| Franchise mode | Yes | No (DD only) | Yes |
| Card marketplace | Yes (live) | Yes | Yes |
About the Operator
Zac built and maintains the entire Legends Deck stack solo: the Statcast data pipeline, the percentile-based rating system, both Franchise and Card Game modes, the live marketplace, and the matchmaking engine. He's an independent operator and a lifelong baseball stat nerd, and he's transparent about the fact that this is a one-person project, not a studio.
Every rating is built from MLB Statcast tracking data and official MLB statistics, run through the Legends Deck ratings engine.
He built Legends Deck because the intersection of playing card games and digging through Statcast leaderboards was a game he wanted to exist and couldn't find.
Frequently Asked Questions
- What is Legends Deck?
- Legends Deck is a free, browser-based baseball card simulation game powered by real MLB Statcast data. Players collect cards of every active MLB player, build a 26-man roster, trade on a live marketplace, and compete head-to-head — no download, no console, no purchase required.
- Is Legends Deck the same as Legends On Deck?
- No. Legends On Deck (legendsondeck.com) is a separate youth baseball training program. Legends Deck (this site, legendsdeck.com) is an unrelated MLB-card simulation game.
- Is Legends Deck the same as Upper Deck Legends?
- No. Upper Deck Legends refers to physical trading-card sets released by The Upper Deck Company in 2000 and 2001. Legends Deck is a free, browser-based digital game with no affiliation to Upper Deck or any physical card manufacturer.
- Is Legends Deck free?
- Yes. Legends Deck is free to play. There is no purchase, subscription, or download required. Coins are earned through gameplay. Optional in-app purchases exist for cosmetic packs but are never required to compete.
- How does Legends Deck use Statcast data?
- Every Legends Deck card rating is a percentile transform of real MLB Statcast data — exit velocity, barrel rate, sprint speed, fastball velocity, whiff rate, xwOBA, and more. Ratings refresh nightly at 3 AM Pacific so cards always reflect current real-world performance. Full methodology is documented at /blog/how-card-ratings-work.
- Is Legends Deck affiliated with MLB?
- No. Legends Deck is an independent project. It uses publicly available MLB Statcast tracking data but has no commercial or licensing relationship with Major League Baseball or any club.
- When was Legends Deck founded?
- Legends Deck was founded in 2024.