Videogame maker THQ Inc. said yesterday that it filed for chapter 11 protection and entered into an agreement with private investment firm Clearlake Capital Group for a potential sale of its assets, Reuters reported yesterday. The assets to be sold include THQ's four studios and games in development. THQ also said that it has commitments from Wells Fargo & Co and Clearlake for financing of approximately $37.5 million, subject to approval from court.