Popular games published by company TechnoBrain

Since its release in 1998, this air traffic control game has established itself as a long seller, strongly supported by numerous users both inside and outside of aviation fandom.

This product (ATC4: Airport New Chitose [RJCC]) is DLC for "I am an Air Traffic Controller 4". This DLC includes control of New Chitose Airport and the adjacent Chitose Air Base in Chitose, Hokkaido, Japan.

This product (ATC4: Airport NARITA [RJAA]) is DLC for "I am an Air Traffic Controller 4". This DLC includes control of Narita International Airport in Narita, Chiba, Japan.