From the Humble Bundle Monthly bundle. I just bought this game about a month ago when it was on sale, so giving it away!

Unfortunately, there was a list of countries that the game could not be redeemed in but I did not catch all the countries that it was not redeemable in as I was getting the key/url. So please enter with caution knowing that and I'm sorry that I didn't pay attention to all of them when I was clicking things. ^^;;
EDIT: I am fairly certain that the countries that cannot redeem this game are...
AL AM AR BD BO BR BT BY CL CN CO CR CU DO EC GE GF GT GY HK HN ID IN JP KG KP KR KZ LA LK MD MK MM MN MO MX MY NI NP PA PE PH PK PR PY RS RU SG SR SV TH TJ TM TR TW UA UY UZ VE VN