Thank you for this nice script, can you change the house edge of this game?
Yes you could change the house edge if you changed the way the profit is calculated.
faucetboxgame/index.php lines 51 and 148
$multi2 = $multi - 0.02; //house edge
I have it set up so that it cuts off 2% off the multiplier. So if someone bets with 50/50 chance of winning, if they win they will only receive a prize as if they bet at a 52% probability instead of 50%.