function finisGame() public onlyOwner {
        require(isInGame == true);
        isInGame = false;
        finishTime = 0;

        
        uint winnerId = _rand(0, 399);
        lastWinnerId = winnerId;
        
        
        address winnerAddress = pixelToOwner[winnerId];
        lastWinnerAddress = winnerAddress;
        
        
        _sendWinnerJackpot(winnerAddress);
        
        
        delete pixels;
    }