Hi suzigar,
Whenever P2P-ing is involved, the game can be safe, but the contents might be malcious. That depends from what dubious source you have downloaded it or who uploaded that “so many minutes free version”, stay away, stay clear and heed the warning here:
http://hosts-file.net/?s=iwin.com
There are many secure sites for playing games without downloading them also, so that practice is far more secure…
polonus