Every single round of an online game follows a strict technical sequence. It begins the moment you select your bet amount and press the action button. At that instant, the game client sends a request to the secure server. The server then uses a mathematical process to determine the result of that round immediately.
Once the result is decided on the server, it is sent back to your device. The animation you see on your screen—the spinning reels, the sliding cards, or the moving ball—is simply a visual representation of a result that has already been determined. The animation does not "decide" the win; it merely reveals it. Finally, the server updates your account balance in real-time to reflect the win or loss. Understanding this process helps players realize that animations are for entertainment and the outcome is locked in the moment the bet is placed.