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🪙 Coin Flip

Coin Flip is EZFlip's flagship game — a classic head-to-head duel where you challenge other players to a 50/50 coin flip showdown.

Overview​

AspectDetails
Game TypePlayer vs Player (PvP)
Odds50/50
House Edge4% (taken from winner)
Min Bet0.01 SOL
Max BetNo limit
Status✅ Live

How to Play​

Creating a Game​

  1. Navigate to Coin Flip from the sidebar or homepage
  2. Select your bet amount using the input field
  3. Choose your side: Green (Heads) or Blue (Tails)
  4. Click "Create Game" to create your flip
  5. Wait for an opponent to join

Joining a Game​

  1. Browse the list of available games
  2. Find a game with a bet amount you're comfortable with
  3. Click "Join" — you'll automatically take the opposite side
  4. The flip happens immediately!

Game Flow​

1. Player A creates a game (e.g., 1 SOL on Green)
           ↓
2. Player B joins (automatically takes Blue)
           ↓
3. Coin flip animation plays
           ↓
4. Winner receives the pot minus house fee

Understanding the Interface​

Game List​

The main game list shows all available and recent games:

  • Available Games: Games waiting for opponents (you can join these)
  • In Progress: Games currently being played
  • Completed: Recent finished games

Your Games​

Toggle to see only games you've created or participated in.

Bet Amount​

  • Use the input field for custom amounts
  • Quick-select buttons for common bet sizes (0.1, 0.5, 1, 5 SOL, etc.)
  • Balance display shows your available funds

Winnings Calculation​

The winner takes the entire pot minus the house edge:

Winnings = (Your Bet + Opponent's Bet) × (1 - House Edge)
Winnings = (Your Bet + Opponent's Bet) × 0.96

Example:

  • You bet 1 SOL on Green
  • Opponent bets 1 SOL on Blue
  • Total pot: 2 SOL
  • Winner receives: 2 × 0.96 = 1.92 SOL
  • Net profit: 0.92 SOL

Provably Fair​

Every Coin Flip uses Random.org for external, verifiable randomness:

How It Works​

  1. Ticket Request: When a game is created, we request a ticket ID from Random.org
  2. Signed String: Random.org generates a cryptographically signed random string
  3. Winner Selection: The signed string determines the winner through our algorithm
  4. Verification: Random.org's signature can be independently verified

Why Random.org?​

  • External Randomness: Random numbers come from a trusted third party, not our servers
  • Cryptographic Signatures: Every random value is signed and verifiable
  • Audit Trail: Random.org maintains records for independent auditing
  • Industry Standard: Used by lotteries, scientific research, and gaming worldwide

Learn more about Provably Fair →

Verification​

After a game:

  1. Click on the completed game
  2. View the game details including the signed string
  3. The Random.org ticket and signature are recorded
  4. Verify using the formula: 
    // Winner selection from Random.org signed string
    const hash = sha256(signedString);
    const randomValue = parseInt(hash.substring(0, 16), 16);
    const winner = randomValue % totalWeight;

Strategies & Tips​

For Beginners
  1. Start Small: Get comfortable with the game before betting large amounts
  2. Watch First: Observe a few games to understand the flow
  3. Manage Bankroll: Never bet more than 5-10% of your balance on a single flip

General Tips​

  • No Strategy Beats 50/50: Each flip is independent — past results don't affect future outcomes
  • House Edge Matters: Over time, the 4% house edge means the house has an advantage
  • Play for Fun: Coin Flip is designed for entertainment, not guaranteed profits
  • Set Limits: Decide on a budget before you start playing

Game Rules​

  1. Matching Bets: When joining a game, you bet the same amount as the creator
  2. Automatic Side Selection: Joining a game automatically places you on the opposite side
  3. No Cancellation: Once a game is created, it cannot be cancelled (it stays open until joined)
  4. Instant Settlement: Winnings are credited immediately after the flip

Frequently Asked Questions​

Can I cancel a game I created?​

Games cannot be cancelled once created. They remain available until another player joins.

What happens if no one joins my game?​

Your game remains open indefinitely until someone joins. You can create multiple games if desired.

Is there a maximum bet?​

There's no hard maximum, but very large bets may take longer to find opponents.

Can I play against friends?​

Yes! Share the direct link to your game with friends so they can join your specific flip.

Why did I lose when I had a "winning streak"?​

Each coin flip is independent. Previous results have no effect on future outcomes — this is known as the "gambler's fallacy."

Quick Stats​

MetricValue
Win Probability50%
Expected Return96% (due to 4% house edge)
House Edge4%
VarianceLow (simple 50/50)

Ready to flip? Head to ezflip.gg/coinflip and start playing! 🪙