Casual gaming startup Playfish has raised $1 million on its way to full venture funding, following its $3 million seed raised earlier this year, according to VentureWire.

Playfish is based in London, but is looking to raise money from Silicon Valley firms. The company took the bridge from Accel Partners to help it make contacts while continuing to develop new games.

All of Playfish’s three games are based on Facebook, and include in-game advertising. It currently has about 6 million players and its games are played 100 million times each month, according to the website.