You may do whatever you want with this game.

Instanssi event model by JetroPag.

Altemark - Pong
23338__altemark__pong.wav - CC-by
http://freesound.org/people/altemark/sounds/23338/

Cabeeno Rossley - Level Complete
126421__cabeeno-rossley__level-complete.wav - CC-by
http://freesound.org/people/Cabeeno%20Rossley/sounds/126421/

Ecfike - Oh No! 4
131409__ecfike__oh-no-4.wav - CC-0
http://freesound.org/people/ecfike/sounds/131409/

Botpl - Wind 1
151782__botpl__wind-1.wav - CC-by
http://freesound.org/people/botpl/sounds/151782/