Complex sentence: Like other japanese game publishers, Culture Brain ceassed it's operations in the United States in the 1990s but the company is well alive in Japan, releasing games mainly for the Game Boy Advance as well being involved in activities other then video gaming.
Split into simpler sentences: Like other japanese game publishers, Culture Brain ceassed it's operations in the United States in the 1990s. The company is well alive in Japan, currently releasing games mainly for the Game Boy Advance as well being involved in activities outside video gaming.