OverBlood is a science fiction video game developed by Riverhillsoft and published by Electronic Arts for the PlayStation. It is considered one of the first survival horror games to make use of a fully three-dimensional virtual environment, second only to Riverhillsoft's own "Doctor Hauzer", a fully 3D survival horror game released for the 3DO in 1994.
OverBlood was not published by Riverhillsoft because it was developed by Riverhillsoft and published by Electronic Arts.
It was indeed published by Electronic Arts and developed by Riverhillsoft. Maybe the sentence structure was too complicated and confusing for the system