Procon

// Settings
 var baseBet = 10; // In bits
 var baseMultiplier = 1.10; // Target multiplier: 1.13 recommended
 var variableBase = true; // Enable variable mode (very experimental), read streakSecurity.
 var streakSecurity = 4; // Number of loss-streak you wanna be safe for. Increasing this massively reduces the variableBase calculated. (1-loss = 20%, 2-loss = 5%, 3-loss = 1.25% of your maximum balance). Recommended: 2+
 var maximumBet = 999999; // Maximum bet the bot will do (in bits).

 // Variables - Do not touch!
 var baseSatoshi = baseBet * 100; // Calculated
 var currentBet = baseSatoshi;
 var currentMultiplier = baseMultiplier;
 var currentGameID = -1;
 var firstGame = true;
 var lossStreak = 0;
 var coolingDown = false;

 // Initialization
 console.log('====== Procon\'s BustaBit Bot ======');
 console.log('My username is: ' + engine.getUsername());
 console.log('Starting balance: ' + (engine.getBalance() / 100).toFixed(2) + ' bits');
 var startingBalance = engine.getBalance();

 if (variableBase) {
       console.warn('[WARN] Variable mode is enabled and not fully tested. Bot is resillient to ' + streakSecurity + '-loss streaks.');
 }

 // On a game starting, place the bet.
 engine.on('game_starting', function(info) {
       console.log('====== New Game ======');
     console.log('[Bot] Game #' + info.game_id);
       currentGameID = info.game_id;

       if (coolingDown) {
       if (lossStreak == 0) {
       coolingDown = false;
       }
       else {
       lossStreak--;
       console.log('[Bot] Cooling down! Games remaining: ' + lossStreak);
       return;
       }
       }

       if (!firstGame) { // Display data only after first game played.
       console.log('[Stats] Session profit: ' + ((engine.getBalance() - startingBalance) / 100).toFixed(2) + ' bits');
       console.log('[Stats] Profit percentage: ' + (((engine.getBalance() / startingBalance) - 1) * 100).toFixed(2) + '%');
       }

       if (engine.lastGamePlay() == 'LOST' && !firstGame) { // If last game loss:
       lossStreak++;
       var totalLosses = 0; // Total satoshi lost.
       var lastLoss = currentBet; // Store our last bet.
       while (lastLoss >= baseSatoshi) { // Until we get down to base bet, add the previous losses.
       totalLosses += lastLoss;
       lastLoss /= 4;
       }

       if (lossStreak > streakSecurity) { // If we're on a loss streak, wait a few games!
       coolingDown = true;
       return;
       }

       currentBet *= 4; // Then multiply base bet by 4!
       currentMultiplier = 1 + (totalLosses / currentBet);
       }
       else { // Otherwise if win or first game:
       lossStreak = 0; // If it was a win, we reset the lossStreak.
       if (variableBase) { // If variable bet enabled.
       // Variable mode resists (currently) 1 loss, by making sure you have enough to cover the base and the 4x base bet.
       var divider = 100;
       for (i = 0; i < streakSecurity; i++) {
       divider += (100 * Math.pow(4, (i + 1)));
       }

       newBaseBet = Math.min(Math.max(1, Math.floor(engine.getBalance() / divider)), maximumBet * 100); // In bits
       newBaseSatoshi = newBaseBet * 100;

       if ((newBaseBet != baseBet) || (newBaseBet == 1)) {
       console.log('[Bot] Variable mode has changed base bet to: ' + newBaseBet + ' bits');
       baseBet = newBaseBet;
       baseSatoshi = newBaseSatoshi;
       }
       }
       // Update bet.
       currentBet = baseSatoshi; // in Satoshi
       currentMultiplier = baseMultiplier;
       }

       // Message and set first game to false to be sure.
       console.log('[Bot] Betting ' + (currentBet / 100) + ' bits, cashing out at ' + currentMultiplier + 'x');
       firstGame = false;

       if (currentBet <= engine.getBalance()) { // Ensure we have enough to bet
       if (currentBet > (maximumBet * 100)) { // Ensure you only bet the maximum.
       console.warn('[Warn] Bet size exceeds maximum bet, lowering bet to ' + (maximumBet * 100) + ' bits');
       currentBet = maximumBet;
       }
       engine.placeBet(currentBet, Math.round(currentMultiplier * 100), false);
       }
       else { // Otherwise insufficent funds...
       if (engine.getBalance() < 100) {
       console.error('[Bot] Insufficent funds to do anything... stopping');
       engine.stop();
       }
       else {
       console.warn('[Bot] Insufficent funds to bet ' + (currentBet / 100) + ' bits.');
       console.warn('[Bot] Resetting to 1 bit basebet');
       baseBet = 1;
       baseSatoshi = 100;
       }
       }
 });

 engine.on('game_started', function(data) {
     if (!firstGame) { console.log('[Bot] Game #' + currentGameID + ' has started!'); }
 });

 engine.on('cashed_out', function(data) {
     if (data.username == engine.getUsername()) {
       console.log('[Bot] Successfully cashed out at ' + (data.stopped_at / 100) + 'x');
       }
 });

 engine.on('game_crash', function(data) {
     if (!firstGame) { console.log('[Bot] Game crashed at ' + (data.game_crash / 100) + 'x'); }
 });