To change your settings for 777 Slots, first launch the game client and click the play button to visit the slots. Next, you can adjust various settings by following these instructions: Use the gear symbol to adjust the sound options for most games. Press the + and - symbols to update the bet amount per spin. Click the play icon to change the auto-play options. Use the full screen and mute icons found in the corner of the screen while playing most games to alter these settings.