This game is called "gra w kropki" (<- link to rules in english) in Poland, and точки (<- link to tochki at wikipedia) ("tochki", dots) in Russia.

2 places to play online:

-> http://www.szkrab.net.pl





-> http://zagram.org/


kropki, dots, tochki on android:

https://market.android.com/details?id=com.soplysoft.dots




https://market.android.com/details?id=pl.karasu.kropki




https://market.android.com/details?id=kropki.Dots





Polish player community:

http://www.kropki.legion.pl