9 of Diamonds ♦
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  • Features
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Download Free
Now Available on the App Store

Every Half-Inning
Is On The Line.

The baseball card game for your group — at the ballpark, on the couch, or across the country. Deal your cards, watch the game, win the pot.

⬇ Download on iOS See How It Works
♦
P
Pitcher
♦
C
Catcher
♦
1B
First
♦
SS
Short
♦
CF
Center ✓
♦
LF
Left
♦
RF
Right
♦
2B
Second
♦
3B
Third
How It Works

Simple Rules.
Infinite Excitement.

One card per position. One winner per half-inning. No baseball knowledge required — just root for your card.

1

Pick Your Teams

Choose any MLB matchup from the live schedule, or enter a custom game for any level of play — high school, little league, whatever.

2

Deal the Cards

Each player gets position cards — Pitcher, Catcher, Shortstop, and more. The cards rotate every half-inning so everyone stays in it.

3

Watch & Win

When a run scores, the player holding that position's card wins the half-inning pot. Track every run, every winner, every dollar.

4

Settle Up

The app tracks who owes what. Settle in cash, Venmo, whatever works for your group. Full payment summary built in.

Play Modes

Together or Apart,
You're All In The Game.

📱 Local Game

Pass one phone around the group. Perfect for fans at the ballpark or watching together on the same couch. One organizer runs everything.

Pass & Play
🏟️

🌐 Play Together

Everyone joins on their own phone with a 6-digit room code. Watch cards flip in real-time. Friends across the country, one game.

Live Multiplayer
♦
Features

Everything Your Group Needs.

⚾

All 30 MLB Teams

Pull up today's schedule and tap any matchup to pre-fill your game in one tap. Live scores built in.

📡

Real-Time Multiplayer

Share a 6-digit code. Friends join instantly. Cards flip live as runs score — no refreshing required.

💰

Cash Tracking

Set a buy-in per half-inning. The app tracks every winner and gives you a full settlement at the end.

🏆

Leaderboard

All-time runs won tracked across every game. See who the real champion of your group is.

📼

Game Replay

Replay any past game half-inning by half-inning. Relive the walk-off inning your card won.

🎓

Multiple Leagues

MLB (9 innings), High School (7), Little League (6), or fully custom. Works at any level.

What Fans Are Saying

★★★★★

"We've played this at every Cubs game this season. The app makes it so easy — no pen and paper needed anymore."

— Mike T., Chicago IL
★★★★★

"My family watches from three different states. Play Together means we're all screaming at the same half-inning."

— Sarah K., Boston MA
★★★★★

"Used it for our son's little league playoff. The kids LOVED it. Even the parents who don't know baseball were into it."

— Dave R., Austin TX

Free to download. Works for any group, any game, any level. Available now on iPhone and iPad.

⬇ Download on the App Store
Home Support Privacy Policy
© 2025 Nine of Diamonds Game. All rights reserved.
Play responsibly. Resources for problem gambling available in-app.
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